updated ads templates

Author: daniel-sanche

gapic/ads-templates/%namespace/%name/%version/%sub/services/%service/transports/base.py.j2

@@ -98,8 +98,6 @@ class {{ service.name }}Transport(abc.ABC):
             host += ':443'
         self._host = host
 
-        scopes_kwargs = {"scopes": scopes, "default_scopes": self.AUTH_SCOPES}
-
         # Save the scopes.
         self._scopes = scopes
 
@@ -114,11 +112,12 @@ class {{ service.name }}Transport(abc.ABC):
         if credentials_file is not None:
             credentials, _ = google.auth.load_credentials_from_file(
                                 credentials_file,
-                                **scopes_kwargs,
-                                quota_project_id=quota_project_id
+                                scopes=scopes,
+                                quota_project_id=quota_project_id,
+                                default_scopes=self.AUTH_SCOPES,
                             )
         elif credentials is None and not self._ignore_credentials:
-            credentials, _ = google.auth.default(**scopes_kwargs, quota_project_id=quota_project_id)
+            credentials, _ = google.auth.default(scopes=scopes, quota_project_id=quota_project_id, default_scopes=self.AUTH_SCOPES)
 
         # If the credentials are service account credentials, then always try to use self signed JWT.
         if always_use_jwt_access and isinstance(credentials, service_account.Credentials) and hasattr(service_account.Credentials, "with_always_use_jwt_access"):