chore(deps): bump astro from 5.15.6 to 5.15.9 in /2025

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.15.6 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
...

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

Author: dependabot[bot]

2025/package.json

@@ -22,7 +22,7 @@
     "@tailwindcss/vite": "^4.1.12",
     "@types/react": "^19.1.11",
     "@types/react-dom": "^19.1.7",
-    "astro": "^5.15.6",
+    "astro": "^5.15.9",
     "astro-google-fonts-optimizer": "^0.2.2",
     "astro-seo": "^0.8.4",
     "react": "^19.1.1",