[android] Fix order in which repos are being synced (#13202)

platform/android/build.gradle

@@ -2,8 +2,8 @@ buildscript {
     apply from: "${rootDir}/gradle/dependencies.gradle"
 
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.4'
@@ -15,8 +15,8 @@ buildscript {
 allprojects {
     repositories {
         mavenCentral()
-        jcenter()
         google()
+        jcenter()
         // Snapshot repository
         //maven { url "http://oss.sonatype.org/content/repositories/snapshots/" }
     }