chore(apps): update icons (#3156)

* chore(apps): update icons

* bump everything

charts/stable/zigbee2mqtt/Chart.yaml

@@ -6,7 +6,7 @@ dependencies:
   version: 10.4.4
 description: Bridges events and allows you to control your Zigbee devices via MQTT
 home: https://github.com/truecharts/apps/tree/master/charts/stable/zigbee2mqtt
-icon: https://truecharts.org/img/appicons/zigbee2mqtt.png
+icon: https://truecharts.org/img/chart-icons/zigbee2mqtt.png
 keywords:
 - zigbee
 - mqtt
@@ -19,7 +19,7 @@ maintainers:
 name: zigbee2mqtt
 sources:
 - https://github.com/Koenkk/zigbee2mqtt
-version: 4.0.14
+version: 4.0.15
 annotations:
   truecharts.org/catagories: |
     - media