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

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

Author: pre-commit-ci[bot]

debug_toolbar/store.py

@@ -2,7 +2,8 @@
 import json
 import logging
 from collections import defaultdict, deque
-from typing import Any, Dict, Iterable
+from collections.abc import Iterable
+from typing import Any, Dict
 
 from django.core.serializers.json import DjangoJSONEncoder
 from django.utils.encoding import force_str