chore(examples): match pages router versions to app router versions

Author: mudetroit

examples/nextjs/package.json

@@ -10,9 +10,9 @@
   },
   "dependencies": {
     "@rollbar/react": "file:.yalc/@rollbar/react",
-    "next": "12.1.0",
-    "react": "17.0.2",
-    "react-dom": "17.0.2",
+    "next": "14.2.15",
+    "react": "^18",
+    "react-dom": "^18",
     "rollbar": "^2.26.4"
   },
   "devDependencies": {