Merge pull request #7058 from nextcloud/dependabot/gradle/com.android.tools.build-gradle-4.0.2

Bump gradle from 4.0.1 to 4.0.2

build.gradle

@@ -21,7 +21,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath 'com.android.tools.build:gradle:4.0.2'
         classpath('com.hiya:jacoco-android:0.2')
         classpath 'gradle.plugin.com.github.spotbugs.snom:spotbugs-gradle-plugin:4.5.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"