Fixes ruff not running isort against the codebase

src/paperless_mail/models.py

@@ -1,8 +1,9 @@
-import documents.models as document_models
 from django.db import models
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
+import documents.models as document_models
+
 
 class MailAccount(document_models.ModelWithOwner):
     class Meta: