gradle: update Google services

Change-Id: I9eb03f9fb162e997712c0c939116195276dd7e00

ring-android/app/build.gradle

@@ -113,7 +113,7 @@ dependencies {
 
     implementation 'com.jsibbold:zoomage:1.2.0'
 
-    implementation('com.google.firebase:firebase-messaging:20.0.0') {
+    withFirebaseImplementation('com.google.firebase:firebase-messaging:20.0.0') {
         exclude group: 'com.google.firebase', module: 'firebase-core'
         exclude group: 'com.google.firebase', module: 'firebase-analytics'
         exclude group: 'com.google.firebase', module: 'firebase-measurement-connector'

ring-android/build.gradle

@@ -5,7 +5,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.5.0'
-        classpath 'com.google.gms:google-services:4.3.0'
+        classpath 'com.google.gms:google-services:4.3.1'
     }
 }
 allprojects {