Bump next-auth from 4.5.0 to 4.9.0 in /clients/privacy-center (#823)

Bumps [next-auth](https://github.com/nextauthjs/next-auth) from 4.5.0 to 4.9.0.
- [Release notes](https://github.com/nextauthjs/next-auth/releases)
- [Changelog](https://github.com/nextauthjs/next-auth/blob/main/CHANGELOG.md)
- [Commits](https://github.com/nextauthjs/next-auth/compare/next-auth@v4.5.0...next-auth@v4.9.0)

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

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