Update docker image version

tasks/app.yml

@@ -59,7 +59,7 @@
     - name: Docker compose service
       set_fact:
         docker_compose_borgmatic_service:
-          image: 'b3vis/borgmatic:base-1.2.0-1.6.0'
+          image: 'b3vis/borgmatic:1.8'
           restart: unless-stopped
           volumes:
             - /etc/timezone:/etc/timezone:ro