Bump next from 12.1.0 to 14.1.1 in /samples/todo-app/frontend

Bumps [next](https://github.com/vercel/next.js) from 12.1.0 to 14.1.1.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v12.1.0...v14.1.1)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

samples/todo-app/frontend/package.json

@@ -11,7 +11,7 @@
         "express": "^4.17.3",
         "isomorphic-fetch": "^3.0.0",
         "mongodb": "^3.5.8",
-        "next": "^12.1.0",
+        "next": "^14.1.1",
         "react": "^16.13.1",
         "react-dom": "^16.13.1",
         "request": "^2.88.2",