Android: Bump gradle version to 5.1.1

Matching changes made in #31521 and #31547 but only in the Jetbrains
IDE config.

(cherry picked from commit 1afd77e375b39c39dde1d4a236ed073df9e8b6d8)

platform/android/build.gradle.template

@@ -5,7 +5,7 @@ buildscript {
 		$$GRADLE_REPOSITORY_URLS$$
 	}
 	dependencies {
-		classpath 'com.android.tools.build:gradle:3.2.1'
+		classpath 'com.android.tools.build:gradle:3.4.2'
 		$$GRADLE_CLASSPATH$$
 	}
 }

platform/android/java/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists