Move google repository to first position

see https://gitlab.com/fdroid/fdroiddata/issues/1423

build.gradle

@@ -2,8 +2,8 @@
 
 buildscript {
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.2'
@@ -12,6 +12,7 @@ buildscript {
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }