fix: Use actual CRON_SCHEDULE for swarm-cronjob instead of demo */5

compose.swarm-cronjob.yml

@@ -7,9 +7,7 @@ services:
       replicas: 0
       labels:
         - "swarm.cronjob.enable=true"
-        # Note(3wc): every 5m, testing
-        - "swarm.cronjob.schedule=*/5 * * * *"
-        # Note(3wc): blank label to be picked up by `abra recipe sync`
+        - "swarm.cronjob.schedule=${CRON_SCHEDULE}"
       restart_policy:
         condition: none
     entrypoint: [ "/usr/bin/backup.sh" ]