Bump next from 15.1.5 to 15.1.6

Bumps [next](https://github.com/vercel/next.js) from 15.1.5 to 15.1.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/compare/v15.1.5...v15.1.6)

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

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

package.json

@@ -50,7 +50,7 @@
     "dompurify": "^3.2.3",
     "lodash": "^4.17.21",
     "lucide-react": "^0.473.0",
-    "next": "^15.1.5",
+    "next": "^15.1.6",
     "next-themes": "^0.4.4",
     "react": "^19.0.0",
     "react-day-picker": "^9.5.0",