Update Ruff config

Author: AdrienVannson

betterproto2/pyproject.toml

@@ -77,6 +77,8 @@ select = [
 
 [tool.ruff.lint.isort]
 combine-as-imports = true
+known-first-party = ["tests"]
+known-third-party = ["grpclib"]
 
 [tool.pytest.ini_options]
 python_files = "test_*.py"

betterproto2/tests/inputs/timestamp_dict_encode/test_timestamp_dict_encode.py

@@ -1,8 +1,4 @@
-from datetime import (
-    datetime,
-    timedelta,
-    timezone,
-)
+from datetime import datetime, timedelta, timezone
 
 import pytest