Bump next-auth from 5.0.0-beta.29 to 5.0.0-beta.30 in /apps/student

Bumps [next-auth](https://github.com/nextauthjs/next-auth) from 5.0.0-beta.29 to 5.0.0-beta.30.
- [Release notes](https://github.com/nextauthjs/next-auth/releases)
- [Commits](https://github.com/nextauthjs/next-auth/compare/next-auth@5.0.0-beta.29...next-auth@5.0.0-beta.30)

---
updated-dependencies:
- dependency-name: next-auth
  dependency-version: 5.0.0-beta.30
  dependency-type: direct:production
...

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

apps/student/package.json

@@ -20,7 +20,7 @@
     "framer-motion": "^12.22.0",
     "lucide-react": "^0.475.0",
     "next": "^15.3.4",
-    "next-auth": "5.0.0-beta.29",
+    "next-auth": "5.0.0-beta.30",
     "next-themes": "^0.4.6",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",