pylint cleanups

meshtastic/stream_interface.py

@@ -6,10 +6,10 @@ import threading
 import time
 import traceback
 
-import serial # type: ignore[import-untyped]
-
 from typing import Optional, cast
 
+import serial # type: ignore[import-untyped]
+
 from meshtastic.mesh_interface import MeshInterface
 from meshtastic.util import is_windows11, stripnl