Updating Pangle Flutter adapter to version 3.5.2

PiperOrigin-RevId: 855258729

Author: Mobile Ads Developer Relations

packages/mediation/gma_mediation_pangle/CHANGELOG.md

@@ -1,8 +1,11 @@
 ## Pangle Flutter Mediation Adapter Changelog
 
-#### Version 3.5.2 (In progress)
+#### Version 3.5.2
 - Updated minimum Flutter version to 3.35.1
 - Updated to support Google Mobile Ads Flutter Plugin version 7.0.0
+- Supports [Pangle Android adapter version 7.8.0.8.0](https://github.com/googleads/googleads-mobile-android-mediation/blob/main/ThirdPartyAdapters/pangle/CHANGELOG.md#version-78080).
+- Supports [Pangle iOS adapter version 7.8.0.6.0](https://github.com/googleads/googleads-mobile-ios-mediation/blob/main/adapters/Pangle/CHANGELOG.md#version-78060).
+- Built and tested with the Google Mobile Ads Flutter Plugin version 7.0.0.
 
 #### Version 3.5.1
 - Supports [Pangle Android adapter version 7.8.0.8.0](https://github.com/googleads/googleads-mobile-android-mediation/blob/main/ThirdPartyAdapters/pangle/CHANGELOG.md#version-78080).