Icons: add missing comma

custom_components/tuya_local/icons.json

@@ -179,7 +179,7 @@
         },
         "sensor": {
             "air_quality": {
-                "default": "mdi:weather-dust"
+                "default": "mdi:weather-dust",
                 "state": {
                     "excellent": "mdi:emoticon-excited",
                     "good": "mdi:emoticon-happy",