Update Astro 5.6.1

package.json

@@ -9,13 +9,13 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/preact": "^4.0.5",
+    "@astrojs/preact": "^4.0.8",
     "@astrojs/rss": "^4.0.11",
     "@astrojs/sitemap": "^3.3.0",
     "@tailwindcss/vite": "^4.0.8",
     "@vercel/speed-insights": "^1.2.0",
     "alpinejs": "^3.14.9",
-    "astro": "^5.4.2",
+    "astro": "^5.6.1",
     "astro-icon": "^1.1.5",
     "preact": "^10.26.2",
     "prismjs": "^1.30.0",