2.13.3 Release

Unity 2020 Android bug Fix & OneSignal Native library updates

Unity Specific Fixes

• Fix - Android - Issue where push notification were not received if app was built with Unity 2020+
  • Issues #310, #312, #328
  • PR #335

Updated Native Android (3.15.7) and iOS (2.16.2) SDKs

• Android Native SDK Update 3.15.7
  • Release Notes 3.15.7
• iOS Native SDK Update 2.16.2
  • Release Notes 2.16.2