Increase the maximum allowed heap size for gradle

Bug: 38323357
Test: None
Change-Id: Ib2203283939e380b7f7d492569074e996b03a175
diff --git a/gradle.properties b/gradle.properties
index fb870a9..1ba8e7c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-org.gradle.jvmargs=-Xmx3g
+org.gradle.jvmargs=-Xmx4g
 org.gradle.daemon=true
 org.gradle.configureondemand=true
 org.gradle.parallel=true