Downgraded Gradle version to fix issues with the ACS Communication pipeline. (#872)

build.gradle

@@ -12,7 +12,7 @@ buildscript {
     ext {
         googleGmsServicesPluginVersion = "4.3.8"
         gradleAndroidBuildToolsPluginVersion = "30.0.3"
-        gradleAndroidToolsPluginVersion = "4.2.1"
+        gradleAndroidToolsPluginVersion = "4.0.1"
         gradleJunitJacocoPluginVersion = "0.16.0"
         gradleDexcountPluginVersion = "3.0.0"
         gradleSpotbugsPluginVersion = "4.7.4"

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-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.4.1-bin.zip