Bump astro in /docs in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the /docs directory: [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro).


Updates `astro` from 4.16.0 to 4.16.3
- [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@4.16.3/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <support@github.com>

docs/package.json

@@ -12,7 +12,7 @@
     "dependencies": {
         "@astrojs/check": "0.9.4",
         "@astrojs/starlight": "0.28.3",
-        "astro": "4.16.0",
+        "astro": "4.16.3",
         "sharp": "0.33.5",
         "typescript": "5.6.3"
     }