Merge pull request #230 from vim-jp/dependabot/npm_and_yarn/2025/astro-5.15.9

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

Author: mopp

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",