chore(deps): update devdependency nuxt to ^3.15.2

Author: renovate[bot]

demo/package.json

@@ -16,7 +16,7 @@
     "@iconify-json/mdi": "^1.2.0",
     "@nuxt/ui": "2.18.4",
     "@nuxtjs/supabase": "^1.4.0",
-    "nuxt": "^3.13.1",
+    "nuxt": "^3.15.2",
     "typescript": "^5.5.4"
   },
   "resolutions": {