Bump next from 13.5.6 to 14.1.1 in /nextjs-demo

Bumps [next](https://github.com/vercel/next.js) from 13.5.6 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@v13.5.6...v14.1.1)

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

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

Author: dependabot[bot]

nextjs-demo/package-lock.json

@@ -15,7 +15,7 @@
 		"@types/react-dom": "18.0.10",
 		"eslint": "8.31.0",
 		"eslint-config-next": "13.1.1",
-		"next": "13.5.6",
+		"next": "14.1.1",
 		"react": "18.2.0",
 		"react-dom": "18.2.0",
 		"react-spaces": "file:../dist",