feat: enable automatic container updates with dockcheck labels

- Configure dockcheck for automatic updates instead of check-only mode
- Add dockcheck update labels to Calibre and Changedetection services
- Enable OnlyLabel and AutoMode for targeted container management

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

roles/docker/templates/calibre-compose.yml.j2

@@ -18,6 +18,7 @@ services:
       glance.icon: si:calibreweb
       glance.url: https://{{ subdomains.books }}/
       glance.description: Book server
+      mag37.dockcheck.update: true
 volumes:
   config:
     driver: local