Use enums in upnp (#62031)

homeassistant/components/upnp/binary_sensor.py

@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 from homeassistant.components.binary_sensor import (
-    DEVICE_CLASS_CONNECTIVITY,
+    BinarySensorDeviceClass,
     BinarySensorEntity,
 )
 from homeassistant.config_entries import ConfigEntry
@@ -45,7 +45,7 @@ async def async_setup_entry(
 class UpnpStatusBinarySensor(UpnpEntity, BinarySensorEntity):
     """Class for UPnP/IGD binary sensors."""
 
-    _attr_device_class = DEVICE_CLASS_CONNECTIVITY
+    _attr_device_class = BinarySensorDeviceClass.CONNECTIVITY
 
     def __init__(
         self,