Fix proguard rules for retrofit

data/units/consumer-rules.pro

@@ -1,5 +1,15 @@
 -repackageclasses
 
+# https://github.com/square/retrofit/issues/3751#issuecomment-1192043644
+# Keep generic signature of Call, Response (R8 full mode strips signatures from non-kept items).
+ -keep,allowobfuscation,allowshrinking interface retrofit2.Call
+ -keep,allowobfuscation,allowshrinking class retrofit2.Response
+
+ # With R8 full mode generic signatures are stripped for classes that are not
+ # kept. Suspend functions are wrapped in continuations where the type argument
+ # is used.
+ -keep,allowobfuscation,allowshrinking class kotlin.coroutines.Continuation
+
 -keepclassmembers class ** {
     @com.squareup.moshi.FromJson *;
     @com.squareup.moshi.ToJson *;