Bump next from 9.5.3 to 9.5.4 in /example

Bumps [next](https://github.com/vercel/next.js) from 9.5.3 to 9.5.4.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v9.5.3...v9.5.4)

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

Author: dependabot[bot]

example/package.json

@@ -10,7 +10,7 @@
     "start": "next start"
   },
   "dependencies": {
-    "next": "^9.5.3",
+    "next": "^9.5.4",
     "node-fetch": "^2.6.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",