fix(941): Use default cred over hardcoded ones

Signed-off-by: dark0dave <[email protected]>

storages/backends/gcloud.py

@@ -147,7 +147,7 @@ def get_default_settings(self):
     @property
     def client(self):
         if self._client is None:
-            self._client = Client(project=self.project_id, credentials=self.credentials)
+            self._client = Client(project=self.project_id)
         return self._client
 
     @property