use latest 18 for @types/react and @types/react-dom in app-router

Author: sommeeeer

examples/app-router/package.json

@@ -20,8 +20,8 @@
   },
   "devDependencies": {
     "@types/node": "20.5.0",
-    "@types/react": "18.2.20",
-    "@types/react-dom": "18.2.7",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "autoprefixer": "10.4.15",
     "postcss": "8.4.27",
     "tailwindcss": "3.3.3",