chore(deps): bump the npm group across 1 directory with 4 updates

Bumps the npm group with 4 updates in the / directory: [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight), [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro), [sharp](https://github.com/lovell/sharp) and [prettier](https://github.com/prettier/prettier).


Updates `@astrojs/starlight` from 0.40.0 to 0.41.3
- [Release notes](https://github.com/withastro/starlight/releases)
- [Changelog](https://github.com/withastro/starlight/blob/main/packages/starlight/CHANGELOG.md)
- [Commits](https://github.com/withastro/starlight/commits/@astrojs/starlight@0.41.3/packages/starlight)

Updates `astro` from 6.4.8 to 7.0.6
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@7.0.6/packages/astro)

Updates `sharp` from 0.35.2 to 0.35.3
- [Release notes](https://github.com/lovell/sharp/releases)
- [Commits](lovell/sharp@v0.35.2...v0.35.3)

Updates `prettier` from 3.8.4 to 3.9.4
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.8.4...3.9.4)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-version: 0.41.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm
- dependency-name: astro
  dependency-version: 7.0.6
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: npm
- dependency-name: sharp
  dependency-version: 0.35.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm
- dependency-name: prettier
  dependency-version: 3.9.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm
...

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Author: dependabot[bot]