chore(deps): update nuxt framework to v4

Author: renovate[bot]

docs/package.json

@@ -9,6 +9,6 @@
   "devDependencies": {
     "@nuxt-themes/docus": "^1.15.1",
     "@nuxtjs/plausible": "^1.2.0",
-    "nuxt": "3.16.1"
+    "nuxt": "4.0.3"
   }
 }

package.json

@@ -31,8 +31,8 @@
     "test": "pnpm lint && vitest run --coverage"
   },
   "dependencies": {
-    "@nuxt/kit": "^3.16.1",
-    "@nuxt/schema": "^3.16.1",
+    "@nuxt/kit": "^4.0.3",
+    "@nuxt/schema": "^4.0.3",
     "google-fonts-helper": "^3.7.3",
     "pathe": "^2.0.3"
   },