fix style errors

pretix_keycloak_create_user/signals.py

@@ -3,7 +3,7 @@ import requests
 from django import forms
 from django.dispatch import receiver
 from django.urls import resolve, reverse
-from django.utils.translation import gettext_noop, gettext_lazy
+from django.utils.translation import gettext_lazy, gettext_noop
 from i18nfield.strings import LazyI18nString
 from pretix.base.services.orders import OrderError
 from pretix.base.settings import settings_hierarkey