chore(deps): update dependency @cap-js/cds-typer to v0.31.0 (#1526)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@cap-js/cds-typer](https://cap.cloud.sap/)
([source](https://redirect.github.com/cap-js/cds-typer)) | [`0.30.0` ->
`0.31.0`](https://renovatebot.com/diffs/npm/@cap-js%2fcds-typer/0.30.0/0.31.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@cap-js%2fcds-typer/0.31.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@cap-js%2fcds-typer/0.31.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@cap-js%2fcds-typer/0.30.0/0.31.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@cap-js%2fcds-typer/0.30.0/0.31.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>cap-js/cds-typer (@&#8203;cap-js/cds-typer)</summary>

###
[`v0.31.0`](https://redirect.github.com/cap-js/cds-typer/blob/HEAD/CHANGELOG.md#0310---2024-12-16)

[Compare
Source](https://redirect.github.com/cap-js/cds-typer/compare/v0.30.0...v0.31.0)

##### Fixed

- type-referencing a property that is a key no longer breaks the
referring property
- when targeting ESM, all imports within the generated types now add a
`/index.js`-suffix to conform to modern module resolution mechanisms
- leaving `target_module_type` at `'auto'` now properly acts on a
detected `"type":"module"`

##### Added

- cds aspects now generate a synthetic plural type too, to be used in
`composition of many`

</details>

---

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