fix format

bumble/transport/android_netsim.py

@@ -108,6 +108,7 @@ def publish_grpc_port(grpc_port) -> bool:
     try:
         ini_file.write_text(f'grpc.port={grpc_port}\n')
         logger.debug(f"published gRPC port at {ini_file}")
+
         def cleanup():
             logger.debug("removing .ini file")
             ini_file.unlink()