Update koenkk/zigbee2mqtt Docker tag to v2.1.1

Author: renovate[bot]

ansible/roles/apps/templates/apps/zigbee2mqtt.yml.j2

@@ -11,7 +11,7 @@ services:
     environment:
       - "TZ={{ timezone }}"
     hostname: zigbee2mqtt
-    image: koenkk/zigbee2mqtt:2.0.0
+    image: koenkk/zigbee2mqtt:2.1.1
     labels:
       icon: https://raw.githubusercontent.com/mr-manuel/CasaOS-HomeAutomation-AppStore/latest/Apps/Zigbee2MQTT/icon.png
     ports: