chore(deps): bump the dependencies group in /website with 2 updates (#1698)

Bumps the dependencies group in /website with 2 updates: [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) and [starlight-llms-txt](https://github.com/delucis/starlight-llms-txt/tree/HEAD/packages/starlight-llms-txt).


Updates `astro` from 5.12.8 to 5.12.9
- [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/[email protected]/packages/astro)

Updates `starlight-llms-txt` from 0.5.1 to 0.6.0
- [Release notes](https://github.com/delucis/starlight-llms-txt/releases)
- [Changelog](https://github.com/delucis/starlight-llms-txt/blob/main/packages/starlight-llms-txt/CHANGELOG.md)
- [Commits](https://github.com/delucis/starlight-llms-txt/commits/[email protected]/packages/starlight-llms-txt)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.12.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: starlight-llms-txt
  dependency-version: 0.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

website/package-lock.json

@@ -26,9 +26,9 @@
   },
   "dependencies": {
     "@astrojs/starlight": "^0.35.2",
-    "astro": "^5.12.8",
+    "astro": "^5.12.9",
     "sharp": "^0.34.3",
-    "starlight-llms-txt": "^0.5.1"
+    "starlight-llms-txt": "^0.6.0"
   },
   "devDependencies": {
     "stylelint-config-recommended": "^17.0.0"