fix compilation error

Author: sdhuka

aws-storage-s3/src/androidTest/java/com/amplifyframework/storage/s3/transfer/TransferDBTest.kt

@@ -26,6 +26,7 @@ import java.time.Instant
 import java.util.UUID
 import org.junit.After
 import org.junit.Assert
+import org.junit.Assert.assertEquals
 import org.junit.Before
 import org.junit.Test