Remove whitespace from a blank line

app/chip_tool/chip_tool.py

@@ -378,7 +378,7 @@ async def start_container(self) -> None:
                 "chip-tool container already running, no need to start a new container"
             )
             return
-    
+
         # Ensure there's no existing container running using the same name.
         self.__destroy_existing_container()
         # Async return when the container is running