Bump astro from 5.16.5 to 5.16.6 in /website

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.16.5 to 5.16.6.
- [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@5.16.6/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.16.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

website/package.json

@@ -22,7 +22,7 @@
     "@tailwindcss/vite": "^4.1.18",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
-    "astro": "5.16.5",
+    "astro": "5.16.6",
     "marked": "^17.0.1",
     "prismjs": "^1.30.0",
     "rehype-mathjax": "^7.1.0",