fix: Updated proguard.cfg (#2132)

* fixed sdk proguard

* Updated CHANGELOG.md

Author: bitsandfoxes

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Fixes
+
+- Updated the SDK's `proguard.cfg` file to preserve the relevant Java SDK API to keep observing and synching the scope. The SDK no longer fails to set the trace on the native layer ([#2132](https://github.com/getsentry/sentry-unity/pull/2132))
+
 ## 3.2.0
 
 ### Fixes

package-dev/Plugins/Android/proguard-sentry-unity.pro

@@ -2,6 +2,7 @@
 -keep class io.sentry.Sentry { *; }
 -keep class io.sentry.Sentry$OptionsConfiguration { *; }
 -keep class io.sentry.android.core.SentryAndroid { *; }
+-keep class io.sentry.android.core.InternalSentrySdk { *; }
 -keep class io.sentry.SentryLevel { *; }
 -keep class io.sentry.SentryOptions { *; }
 -keep class io.sentry.Hub { *; }