Update docker.io/alfresco/alfresco-activemq Docker tag to v5.18.6

Author: renovate[bot]

xenit-alfresco/values.yaml

@@ -135,7 +135,7 @@ mq:
   image:
     registry: 'docker.io'
     repository: 'alfresco/alfresco-activemq'
-    tag: '5.18.3-jre17-rockylinux8@sha256:25386b20263b7e838605e07fea2713fb65762010c1c677cf82aecefbaed5d227'
+    tag: '5.18.6-jre17-rockylinux8@sha256:a549fb890501f598e703e125411f42fad77cfd3079d269c59e21a7bf4370f319'
   init:
     image:
       registry: 'docker.io'