Bump postcss-dark-theme-class from 1.2.2 to 1.3.0

Bumps [postcss-dark-theme-class](https://github.com/postcss/postcss-dark-theme-class) from 1.2.2 to 1.3.0.
- [Release notes](https://github.com/postcss/postcss-dark-theme-class/releases)
- [Changelog](https://github.com/postcss/postcss-dark-theme-class/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss-dark-theme-class@1.2.2...1.3.0)

---
updated-dependencies:
- dependency-name: postcss-dark-theme-class
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -35,7 +35,7 @@
     "eslint-plugin-tailwindcss": "3.15.1",
     "mdast-util-to-string": "4.0.0",
     "patch-package": "8.0.0",
-    "postcss-dark-theme-class": "1.2.2",
+    "postcss-dark-theme-class": "1.3.0",
     "prettier": "3.2.5",
     "prettier-plugin-astro": "0.13.0",
     "prettier-plugin-css-order": "2.1.2",