fix: int type for insertion_callbacks in MQTTService

src/services/mqtt_service.py

@@ -28,7 +28,7 @@ class MQTTService:
         self.client.on_message = self.on_message
 
         self.devices: dict[int, int] = {}
-        self.insertion_callbacks: Dict[str, Dict[int, Callable]] = {}
+        self.insertion_callbacks: Dict[int, Dict[int, Callable]] = {}
 
         if debug:
             logger.info("No MQTT in debug mode")