fix(deps): update nuxt framework to v4

Author: renovate[bot]

package.json

@@ -41,7 +41,7 @@
     "dev:prepare": "nuxt-module-build build --stub && nuxi prepare playground"
   },
   "dependencies": {
-    "@nuxt/kit": "^3.13.2",
+    "@nuxt/kit": "^4.0.0",
     "cookie-es": "^2.0.0",
     "defu": "^6.1.2",
     "destr": "^2.0.0",
@@ -55,7 +55,7 @@
   },
   "devDependencies": {
     "@nuxt/module-builder": "0.8.4",
-    "@nuxt/schema": "3.17.4",
+    "@nuxt/schema": "4.0.3",
     "@privyid/eslint-config-persona": "1.2.0",
     "@types/html-escaper": "3.0.4",
     "@types/node": "22.15.21",
@@ -73,7 +73,7 @@
     "eslint-plugin-unicorn": "47.0.0",
     "eslint-plugin-varspacing": "1.2.2",
     "eslint-plugin-vue": "9.33.0",
-    "nuxt": "3.17.4",
+    "nuxt": "4.0.3",
     "typescript": "5.8.3"
   },
   "publishConfig": {