Merge pull request #76 from square/zachklipp/upgrade-agp

Upgrade AGP.

Author: zach-klippenstein

buildSrc/src/main/java/Dependencies.kt

@@ -30,7 +30,7 @@ object Versions {
 
 @Suppress("unused")
 object Dependencies {
-  const val android_gradle_plugin = "com.android.tools.build:gradle:4.2.0-alpha14"
+  const val android_gradle_plugin = "com.android.tools.build:gradle:4.2.0-alpha15"
 
   object AndroidX {
     const val appcompat = "androidx.appcompat:appcompat:1.1.0"