style: end with newline char

Signed-off-by: Samantha Coyle <sam@diagrid.io>

Author: sicoyle

tests/issues/test_streamable_http_405_get_stream.py

@@ -96,4 +96,5 @@ async def test_405_get_stream_does_not_hang(caplog: pytest.LogCaptureFixture):
     ), f"Expected 405 log message not found in: {log_messages}"
 
     reconnect_messages = [msg for msg in log_messages if "reconnecting" in msg.lower()]
-    assert len(reconnect_messages) == 0, f"Should not retry on 405, but found: {reconnect_messages}"
+    assert len(reconnect_messages) == 0, f"Should not retry on 405, but found: {reconnect_messages}"
+