build(deps): bump next from 16.1.6 to 16.2.6 in /app

Bumps [next](https://github.com/vercel/next.js) from 16.1.6 to 16.2.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v16.1.6...v16.2.6)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

app/package.json

@@ -57,7 +57,7 @@
     "input-otp": "1.4.2",
     "loglayer": "^9.1.0",
     "lucide-react": "^1.14.0",
-    "next": "16.2.4",
+    "next": "16.2.6",
     "next-intl": "^4.11.0",
     "next-themes": "^0.4.6",
     "pino": "^10.3.1",