chore(deps): bump astro from 5.12.8 to 5.13.4

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.12.8 to 5.13.4.
- [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@5.13.4/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.13.4
  dependency-type: direct:production
...

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

package.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@astrojs/cloudflare": "^12.6.5",
     "@tailwindcss/vite": "^4.1.11",
-    "astro": "^5.12.8",
+    "astro": "^5.13.4",
     "astro-icon": "^1.1.5",
     "lucide-astro": "^0.536.0",
     "lucide-react": "^0.536.0",