Replace black/isort with ruff (#188)

* Replace black/isort with ruff

* fix typo

django_q/scheduler.py

@@ -2,11 +2,10 @@ import ast
 from multiprocessing.process import current_process
 
 from django import core, db
+from django.apps.registry import apps
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
-from django.apps.registry import apps
-
 try:
     apps.check_apps_ready()
 except core.exceptions.AppRegistryNotReady:
@@ -86,7 +85,7 @@ def scheduler(broker: Broker = None):
                     # Little Fix for already broken numbers
                     if s.repeats < -1:
                         s.repeats = -1
-                    
+
                     # Check if the value is not zero
                     if s.repeats > 0:
                         s.repeats -= 1