test: add additional spacing before TestContextManager class in test_client.py

Author: Sumanth007

python/test_client.py

@@ -189,6 +189,8 @@ async def mock_request(method, params):
             assert captured["session.resume"]["clientName"] == "my-app"
         finally:
             await client.force_stop()
+
+
 class TestContextManager:
     @pytest.mark.asyncio
     async def test_client_context_manager_returns_self(self):