UnityEngine. Social Is Depreciated

### [REQUIRED] Please fill in the following fields:

* Unity editor version: Unity 6000.0.55f1
* Firebase Unity SDK version: 12.10.1
* Source you installed the SDK: Tarball Package (.unitypackage or Unity Package Manager)
* Problematic Firebase Component: Auth Samples (Auth, Database, etc.)
* Other Firebase Components in use: Firestore (Auth, Database, etc.)
* Additional SDKs you are using: Doesn't matter (Facebook, AdMob, etc.)
* Platform you are using the Unity editor on: Windows (Mac, Windows, or Linux)
* Platform you are targeting: iOS (iOS, Android, and/or desktop)
* Scripting Runtime: IL2CPP (Mono, and/or IL2CPP)

### [REQUIRED] Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

#### Steps to reproduce:

On Unity 6+ Social is obsolete. Update the quickstart samples pls.