fix: fix lint

apps/sspanel/models.py

@@ -14,7 +14,7 @@
 from django.contrib.auth.models import AbstractUser
 from django.core.exceptions import ValidationError
 from django.core.validators import MaxValueValidator, MinValueValidator
-from django.db import models, transaction, IntegrityError
+from django.db import IntegrityError, models, transaction
 from django.utils import functional, timezone
 from redis.exceptions import LockError