fix(deps): update dependency nuxt to v4

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
     "@iconify-json/mingcute": "1.2.3",
     "@vueuse/core": "13.3.0",
     "@vueuse/nuxt": "13.3.0",
-    "nuxt": "3.17.5",
+    "nuxt": "4.2.1",
     "postcss": "8.5.5",
     "postcss-nesting": "13.0.2",
     "radix-vue": "1.9.17",