Update build script versions

Change-Id: I6821a15acc6d412ebe38a4d3b464144780284c46
diff --git a/build.gradle b/build.gradle
index 1ce4004..945872d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.2'
+        classpath 'com.android.tools.build:gradle:3.4.0'
         // classpath 'net.named-data.playground:play-publisher:1.2.0-2-SNAPSHOT'
         classpath 'com.github.triplet.gradle:play-publisher:1.2.0'