Bump next from 14.1.1 to 14.2.15 in /ui

Bumps [next](https://github.com/vercel/next.js) from 14.1.1 to 14.2.15.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.1.1...v14.2.15)

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

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

ui/package.json

@@ -17,7 +17,7 @@
     "formulosity-ui": "file:",
     "iron-session": "^6.3.1",
     "moment": "^2.29.4",
-    "next": "^14.1.1",
+    "next": "^14.2.15",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-sortablejs": "^6.1.4",