Minor: fix formatting

Signed-off-by: cwasicki <126617870+cwasicki@users.noreply.github.com>

Author: cwasicki

src/frequenz/client/reporting/__init__.py

@@ -6,7 +6,6 @@
 This package provides a low-level interface for interacting with the reporting API.
 """
 
-
 from ._client import ReportingApiClient
 
 __all__ = ["ReportingApiClient"]

tests/test_client_reporting.py

@@ -2,6 +2,7 @@
 # Copyright © 2024 Frequenz Energy-as-a-Service GmbH
 
 """Tests for the frequenz.client.reporting package."""
+
 from unittest.mock import MagicMock, patch
 
 import pytest