[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

silk/middleware.py

@@ -2,7 +2,7 @@
 import random
 
 from django.conf import settings
-from django.db import DatabaseError, transaction, router
+from django.db import DatabaseError, router, transaction
 from django.db.models.sql.compiler import SQLCompiler
 from django.urls import NoReverseMatch, reverse
 from django.utils import timezone

silk/models.py

@@ -8,7 +8,7 @@
 from django.conf import settings
 from django.core.files.storage import storages
 from django.core.files.storage.handler import InvalidStorageError
-from django.db import models, transaction, router
+from django.db import models, router, transaction
 from django.db.models import (
     BooleanField,
     CharField,