chore(deps): bump astro (#389)

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


Updates `astro` from 5.15.8 to 5.15.9
- [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)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.15.9
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

website/package.json

@@ -18,7 +18,7 @@
     "@tailwindcss/vite": "^4.1.17",
     "@types/react": "^19.2.5",
     "@types/react-dom": "^19.2.3",
-    "astro": "^5.15.8",
+    "astro": "^5.15.9",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "react": "^19.2.0",