Bump next in /code-samples/eventing/bookstore-sample-app/start/frontend (#6251)

Bumps [next](https://github.com/vercel/next.js) from 14.2.21 to 14.2.26.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.21...v14.2.26)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 14.2.26
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Diff for: code-samples/eventing/bookstore-sample-app/start/frontend/package-lock.json

@@ -12,7 +12,7 @@
     "@heroicons/react": "^2.1.3",
     "@nextui-org/react": "^2.2.10",
     "framer-motion": "^11.0.22",
-    "next": "14.2.21",
+    "next": "14.2.26",
     "next-themes": "^0.3.0",
     "react": "^18",
     "react-dom": "^18"