increase max allowed memory usage for jvm when building android app

it is possible to OOM when building for android otherwise

Author: johnbotris

Diff for: app-android/gradle.properties

@@ -16,4 +16,7 @@
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 
-android.useAndroidX=true
+android.useAndroidX=true
+
+# maximum allowed memory usage
+org.gradle.jvmargs=-Xmx4096m