one more fix

tests/test_metrics_middleware.py

@@ -7,8 +7,12 @@ from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 from aiogram.types import Message
+
 from helper_bot.middlewares.metrics_middleware import (
-    DatabaseMetricsMiddleware, ErrorMetricsMiddleware, MetricsMiddleware)
+    DatabaseMetricsMiddleware,
+    ErrorMetricsMiddleware,
+    MetricsMiddleware,
+)
 
 
 @pytest.mark.unit