Update gradle version

build.gradle

@@ -10,7 +10,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.0-alpha03'
+        classpath 'com.android.tools.build:gradle:3.3.0-alpha04'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}"
         classpath "org.jetbrains.dokka:dokka-gradle-plugin:${versions.dokka}"
         classpath 'com.google.gms:google-services:3.2.0'

gradle/wrapper/gradle-wrapper.properties

-#Fri May 18 17:08:16 IST 2018
+#Mon Aug 06 11:30:07 BRT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-rc-2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-all.zip
 distributionSha256Sum=9bc16f929e5920a9a27fef22c65a8ab8140d705e418de0159ca6eb7f08a74200