Update astro monorepo to v6

Author: renovate[bot]

package.json

@@ -35,10 +35,10 @@
   "homepage": "https://views.igorkowalczyk.dev/",
   "dependencies": {
     "@astrojs/cloudflare": "12.6.10",
-    "@astrojs/vue": "5.1.3",
+    "@astrojs/vue": "6.0.0",
     "@tailwindcss/vite": "4.1.17",
     "@vueuse/core": "14.0.0",
-    "astro": "5.15.5",
+    "astro": "6.0.1",
     "astro-compressor": "1.2.0",
     "badgen": "3.2.3",
     "canvas-confetti": "1.9.4",