Bump next-auth from 4.24.14 to 4.24.15

Bumps [next-auth](https://github.com/nextauthjs/next-auth) from 4.24.14 to 4.24.15.
- [Release notes](https://github.com/nextauthjs/next-auth/releases)
- [Commits](https://github.com/nextauthjs/next-auth/compare/next-auth@4.24.14...next-auth@4.24.15)

---
updated-dependencies:
- dependency-name: next-auth
  dependency-version: 4.24.15
  dependency-type: direct:production
...

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

Author: dependabot[bot]

frontend/package.json

@@ -44,7 +44,7 @@
     "eslint-plugin-simple-import-sort": "^13.0.0",
     "lucide-react": "^1.23.0",
     "next": "16.2.10",
-    "next-auth": "^4.24.14",
+    "next-auth": "^4.24.15",
     "next-themes": "^0.4.6",
     "postcss": "^8.5.16",
     "prettier": "^3.9.4",