Fix test_update_user test

Author: stevenclouston

authsignal/client_tests.py

@@ -95,6 +95,7 @@ def test_delete_user(self):
 
         self.assertEqual(response["success"], True)
 
+    @responses.activate
     def test_update_user(self):
         user_id = "1234"
         data = {"email": "[email protected]"}