chore(deps): update dependency @astrojs/starlight to v0.30.5 (#894)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@astrojs/starlight](https://starlight.astro.build)
([source](https://redirect.github.com/withastro/starlight/tree/HEAD/packages/starlight))
| [`0.30.4` ->
`0.30.5`](https://renovatebot.com/diffs/npm/@astrojs%2fstarlight/0.30.4/0.30.5)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/@astrojs%2fstarlight/0.30.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@astrojs%2fstarlight/0.30.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@astrojs%2fstarlight/0.30.4/0.30.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@astrojs%2fstarlight/0.30.4/0.30.5?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>withastro/starlight (@&#8203;astrojs/starlight)</summary>

###
[`v0.30.5`](https://redirect.github.com/withastro/starlight/blob/HEAD/packages/starlight/CHANGELOG.md#0305)

[Compare
Source](https://redirect.github.com/withastro/starlight/compare/@astrojs/[email protected]...@astrojs/[email protected])

##### Patch Changes

-
[#&#8203;2757](https://redirect.github.com/withastro/starlight/pull/2757)
[`e7b0e74`](https://redirect.github.com/withastro/starlight/commit/e7b0e742dffb7c4a8f4619297e4bd6e5a8015edb)
Thanks [@&#8203;HiDeoo](https://redirect.github.com/HiDeoo)! - Fixes a
UI string translation issue for languages with a region subtag.

-
[#&#8203;2760](https://redirect.github.com/withastro/starlight/pull/2760)
[`aec9edd`](https://redirect.github.com/withastro/starlight/commit/aec9edd14827a45fbc92d82db83dd713571e0c2d)
Thanks [@&#8203;HiDeoo](https://redirect.github.com/HiDeoo)! - Adds 5
new icons: `left-caret`, `up-arrow`, `down-arrow`, `download`, and
`cloud-download`.

</details>

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