deps(npm): bump the astro-docs group across 1 directory with 3 updates (#337)

Bumps the astro-docs group with 3 updates in the /docs directory: [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight), [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) and [starlight-theme-galaxy](https://github.com/frostybee/starlight-theme-galaxy/tree/HEAD/packages/starlight-theme-galaxy).


Updates `@astrojs/starlight` from 0.41.7 to 0.41.9
- [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@0.41.9/packages/starlight)

Updates `astro` from 7.2.4 to 7.2.9
- [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@7.2.9/packages/astro)

Updates `starlight-theme-galaxy` from 0.8.0 to 1.0.0
- [Release notes](https://github.com/frostybee/starlight-theme-galaxy/releases)
- [Changelog](https://github.com/frostybee/starlight-theme-galaxy/blob/main/packages/starlight-theme-galaxy/CHANGELOG.md)
- [Commits](https://github.com/frostybee/starlight-theme-galaxy/commits/starlight-theme-galaxy@1.0.0/packages/starlight-theme-galaxy)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-version: 0.41.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: astro-docs
- dependency-name: astro
  dependency-version: 7.2.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: astro-docs
- dependency-name: starlight-theme-galaxy
  dependency-version: 1.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: astro-docs
...

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Author: dependabot[bot]