chore(deps): bump next from 15.5.9 to 16.1.5

Bumps [next](https://github.com/vercel/next.js) from 15.5.9 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@v15.5.9...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

@@ -61,7 +61,7 @@
         "humanize-duration": "^3.29.0",
         "jotai": "^2.12.4",
         "lodash": "^4.17.21",
-        "next": "^15.5.9",
+        "next": "^16.1.5",
         "next-themes": "^0.4.6",
         "react": "^19.2.3",
         "react-chartjs-2": "^5.3.0",