chore(deps): update nuxt framework to v4 (v3) (major) (#4532)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Benjamin Canac <canacb1@gmail.com>

playground/package.json

@@ -14,7 +14,7 @@
     "@internationalized/date": "^3.8.2",
     "@nuxt/ui": "workspace:*",
     "@nuxthub/core": "^0.9.0",
-    "nuxt": "^3.17.7",
+    "nuxt": "^4.0.0",
     "zod": "^4.0.5"
   },
   "devDependencies": {