build(deps): bump astro from 5.18.0 to 5.18.1

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.18.0 to 5.18.1.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/astro@5.18.1/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.18.1/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.18.1
  dependency-type: direct:production
...

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

packages/website/package.json

@@ -21,7 +21,7 @@
     "@astrojs/rss": "^4.0.15",
     "@astrojs/sitemap": "^3.7.0",
     "@mkljczk/astro-theme": "github:mkljczk/mkljczk-astro-theme",
-    "astro": "^5.18.0",
+    "astro": "^5.18.1",
     "rehype-external-links": "^3.0.0",
     "sharp": "^0.34.3"
   }