chore(deps): update dependency postcss-preset-env to v9.6.0 (#2355)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[postcss-preset-env](https://togithub.com/csstools/postcss-plugins/tree/main/plugin-packs/postcss-preset-env#readme)
([source](https://togithub.com/csstools/postcss-plugins/tree/HEAD/plugin-packs/postcss-preset-env))
| [`9.5.15` ->
`9.6.0`](https://renovatebot.com/diffs/npm/postcss-preset-env/9.5.15/9.6.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/postcss-preset-env/9.6.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/postcss-preset-env/9.6.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/postcss-preset-env/9.5.15/9.6.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/postcss-preset-env/9.5.15/9.6.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>csstools/postcss-plugins (postcss-preset-env)</summary>

###
[`v9.6.0`](https://togithub.com/csstools/postcss-plugins/blob/HEAD/plugin-packs/postcss-preset-env/CHANGELOG.md#960)

[Compare
Source](https://togithub.com/csstools/postcss-plugins/compare/4a629e608f7398301008be1e0fabddd99ff42434...5d45f917601848f9d41f23424de4a98133e5bc2b)

*July 7, 2024*

- Added `@csstools/postcss-content-alt-text` [Check the plugin
README](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-content-alt-text#readme)
for usage details.
- Updated [`cssdb`](https://togithub.com/csstools/cssdb) to
[`8.1.0`](https://togithub.com/csstools/cssdb/blob/main/CHANGELOG.md#810-jul-7-2024)
(minor)
- Updated
[`@csstools/postcss-progressive-custom-properties`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-progressive-custom-properties)
to
[`3.3.0`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-progressive-custom-properties/CHANGELOG.md#330)
(minor)
- Updated
[`@csstools/postcss-color-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-function)
to
[`3.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-function/CHANGELOG.md#3019)
(patch)
- Updated
[`@csstools/postcss-color-mix-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-mix-function)
to
[`2.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-mix-function/CHANGELOG.md#2019)
(patch)
- Updated
[`@csstools/postcss-gradients-interpolation-method`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gradients-interpolation-method)
to
[`4.0.20`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gradients-interpolation-method/CHANGELOG.md#4020)
(patch)
- Updated
[`@csstools/postcss-hwb-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-hwb-function)
to
[`3.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-hwb-function/CHANGELOG.md#3018)
(patch)
- Updated
[`@csstools/postcss-ic-unit`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-ic-unit)
to
[`3.0.7`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-ic-unit/CHANGELOG.md#307)
(patch)
- Updated
[`@csstools/postcss-light-dark-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-light-dark-function)
to
[`1.0.8`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-light-dark-function/CHANGELOG.md#108)
(patch)
- Updated
[`@csstools/postcss-oklab-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-oklab-function)
to
[`3.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-oklab-function/CHANGELOG.md#3019)
(patch)
- Updated
[`@csstools/postcss-relative-color-syntax`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-relative-color-syntax)
to
[`2.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-relative-color-syntax/CHANGELOG.md#2019)
(patch)
- Updated
[`postcss-color-functional-notation`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-functional-notation)
to
[`6.0.14`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-functional-notation/CHANGELOG.md#6014)
(patch)
- Updated
[`postcss-double-position-gradients`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-double-position-gradients)
to
[`5.0.7`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-double-position-gradients/CHANGELOG.md#507)
(patch)
- Updated
[`postcss-lab-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-lab-function)
to
[`6.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-lab-function/CHANGELOG.md#6019)
(patch)

###
[`v9.5.16`](https://togithub.com/csstools/postcss-plugins/blob/HEAD/plugin-packs/postcss-preset-env/CHANGELOG.md#9516)

[Compare
Source](https://togithub.com/csstools/postcss-plugins/compare/2b9fd57c1f7ba9f9b87b4662173f7deb4f32a4e3...4a629e608f7398301008be1e0fabddd99ff42434)

*July 6, 2024*

- Added list of browsers that require a polyfill in the log output of
`debug` (by [@&#8203;clarfonthey](https://togithub.com/clarfonthey))
- Updated detection for `areaHrefNeedsFixing` to exclude Edge 79 and
later
- Updated
[`@csstools/postcss-logical-viewport-units`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-logical-viewport-units)
to
[`2.0.11`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-logical-viewport-units/CHANGELOG.md#2011)
(patch)
- Updated
[`@csstools/postcss-light-dark-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-light-dark-function)
to
[`1.0.7`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-light-dark-function/CHANGELOG.md#107)
(patch)
- Updated
[`@csstools/postcss-exponential-functions`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-exponential-functions)
to
[`1.0.9`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-exponential-functions/CHANGELOG.md#109)
(patch)
- Updated
[`@csstools/postcss-media-minmax`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-media-minmax)
to
[`1.1.8`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-media-minmax/CHANGELOG.md#118)
(patch)
- Updated
[`@csstools/postcss-media-queries-aspect-ratio-number-values`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-media-queries-aspect-ratio-number-values)
to
[`2.0.11`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-media-queries-aspect-ratio-number-values/CHANGELOG.md#2011)
(patch)
- Updated
[`@csstools/postcss-stepped-value-functions`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-stepped-value-functions)
to
[`3.0.10`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-stepped-value-functions/CHANGELOG.md#3010)
(patch)
- Updated
[`@csstools/postcss-trigonometric-functions`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-trigonometric-functions)
to
[`3.0.10`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-trigonometric-functions/CHANGELOG.md#3010)
(patch)
- Updated
[`postcss-custom-media`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-media)
to
[`10.0.8`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-media/CHANGELOG.md#1008)
(patch)
- Updated
[`postcss-custom-properties`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-properties)
to
[`13.3.12`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-properties/CHANGELOG.md#13312)
(patch)
- Updated
[`postcss-custom-selectors`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-selectors)
to
[`7.1.12`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-selectors/CHANGELOG.md#7112)
(patch)
- Updated
[`@csstools/postcss-color-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-function)
to
[`3.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-function/CHANGELOG.md#3018)
(patch)
- Updated
[`@csstools/postcss-color-mix-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-mix-function)
to
[`2.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-mix-function/CHANGELOG.md#2018)
(patch)
- Updated
[`@csstools/postcss-gamut-mapping`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gamut-mapping)
to
[`1.0.11`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gamut-mapping/CHANGELOG.md#1011)
(patch)
- Updated
[`@csstools/postcss-gradients-interpolation-method`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gradients-interpolation-method)
to
[`4.0.19`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-gradients-interpolation-method/CHANGELOG.md#4019)
(patch)
- Updated
[`@csstools/postcss-hwb-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-hwb-function)
to
[`3.0.17`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-hwb-function/CHANGELOG.md#3017)
(patch)
- Updated
[`@csstools/postcss-oklab-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-oklab-function)
to
[`3.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-oklab-function/CHANGELOG.md#3018)
(patch)
- Updated
[`@csstools/postcss-relative-color-syntax`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-relative-color-syntax)
to
[`2.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-relative-color-syntax/CHANGELOG.md#2018)
(patch)
- Updated
[`postcss-color-functional-notation`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-functional-notation)
to
[`6.0.13`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-functional-notation/CHANGELOG.md#6013)
(patch)
- Updated
[`postcss-lab-function`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-lab-function)
to
[`6.0.18`](https://togithub.com/csstools/postcss-plugins/tree/main/plugins/postcss-lab-function/CHANGELOG.md#6018)
(patch)

</details>

---

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rebase/retry checkbox.

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