Bump next from 15.4.7 to 16.1.5

Bumps [next](https://github.com/vercel/next.js) from 15.4.7 to 16.1.5.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.4.7...v16.1.5)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.1.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package.json

@@ -47,7 +47,7 @@
     "gray-matter": "^4.0.3",
     "input-otp": "1.4.1",
     "lucide-react": "^0.454.0",
-    "next": "15.4.7",
+    "next": "16.1.5",
     "next-themes": "latest",
     "react": "^19.1.1",
     "react-day-picker": "8.10.1",