Version 10.0.0

### 10.0.0
- Changes
    - General: Updated Firebase C++ SDK dependencies to v10.0.0.
    - General (Android): Update Firebase Android BoM dependencies to v31.0.0.
    - General (iOS): Update Firebase Cocoapods dependencies to v10.0.0.
    - General: Minimum supported editor version is now Unity 2019.
    - General: Removed dependency on Parse Tasks.
    - Auth (Android/iOS): Deprecate `PhoneAuthProvider.MaxTimeoutMs`. The actual
      range is determined by the underlying SDK, ex. [PhoneAuthOptions.Builder in Android SDK](https://firebase.google.com/docs/reference/android/com/google/firebase/auth/PhoneAuthOptions.Builder).
    - Remote Config: Improve performance when setting default parameters
      with long strings.