godot/platform/android/java/app/config.gradle

ext.versions = [
        androidGradlePlugin : '3.4.2',
        compileSdk : 28,
        minSdk : 18,
        targetSdk : 28,
        buildTools : '28.0.3',

]

ext.libraries = [
        androidGradlePlugin : "com.android.tools.build:gradle:$versions.androidGradlePlugin"
]