Version 10.7.0
### 10.7.0
- Changes
- General: Update to Firebase C++ SDK version 10.7.0.
- General (Android): Update Firebase Android BoM dependencies to v31.3.0.
- General (iOS): Update Firebase Cocoapods dependencies to v10.7.0.
- Messaging (Android): Generate the custom MessagingUnityPlayerActivity
as a Java file instead of precompiling it. This is to better support
changes with the UnityPlayerActivity, and GameActivity options, in
the Unity 2023 editor.