fix HA camera warning

custom_components/deebot/camera.py

@@ -60,7 +60,7 @@ def device_info(self) -> Optional[Dict[str, Any]]:
         return get_device_info(self._vacuum_bot)
 
     async def async_camera_image(
-        self, width: Optional[int] = None, _: Optional[int] = None
+        self, width: Optional[int] = None, height: Optional[int] = None
     ) -> Optional[bytes]:
         """Return a still image response from the camera.