Set game loop gradle version back to 6.1.1, minimum supported. (#926)

Fixes emulator failure in integration tests

Author: jonsimantov

scripts/gha/integration_testing/gameloop_android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https://services.gradle.org/distributions/gradle-6.1.1-all.zip