[skip ci] Update maven-google url

visit https://maven.google.com redirect to 
https://dl.google.com/dl/android/maven2/

.github/dependabot.yml

@@ -7,7 +7,8 @@ version: 2
 registries:
   maven-google:
     type: maven-repository
-    url: https://maven.google.com
+    # url: https://maven.google.com
+    url: https://dl.google.com/dl/android/maven2/
     password: dummy
     username: dummy
   maven-central: