Bump astro from 4.9.1 to 4.16.18

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 4.9.1 to 4.16.18.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/[email protected]/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/[email protected]/packages/astro)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/docs/package.json

@@ -14,7 +14,7 @@
     "@astrojs/mdx": "^3.0.1",
     "@astrojs/svelte": "^5.4.0",
     "@astrojs/tailwind": "^5.1.0",
-    "astro": "^4.9.1",
+    "astro": "^4.16.18",
     "svelte": "^4.2.17",
     "tailwindcss": "^3.4.3",
     "typescript": "^5.4.5"