Plugin :
- Updated the GMA iOS SDK dependency version to 13.7.0.
- Updated the GMA Android Next-Gen SDK dependency version to 1.3.1.
- Added support for forwarding request extras to Android ad request builders when using the Next-Gen SDK.
- Added PeekAdResponseInfo() support for Preloading APIs to inspect first ad object in cache without removing it.
- Added fix to handle destroying banner ad before the ad finishes loading when using the next gen SDK.
- Updated External Dependency Manager for Unity dependency to use 1.2.188