Version 13.2.0

### 13.2.0
-   Changes
    - General: Update to Firebase C++ SDK version 13.1.0.
    - General (Android): Update to Firebase Android BoM version 34.2.0.
    - General (iOS): Update to Firebase Cocoapods version 12.2.0.
    - Firebase AI: Add support for receiving Thought summaries when
      generating content.
    - Firebase AI: Remove `LiveGenerationConfig.CandidateCount`, since the
      connection fails silently when it is set.