Error running playbook traefik.yml

Executing `ansible-playbook traefik.yml -i hosts` on Ubuntu 24.04 returns an error
`service traefik refers to undefined network traefik_net: invalid compose project`

Start by running `ansible-playbook traefik.yml -i hosts` on Ubuntu 24.04 and inspect the Traefik compose configuration used by the playbook. Trace the `traefik` service and its `traefik_net` reference; done means the playbook completes without the undefined-network or invalid-compose-project error.

Written by the indexing model from the issue text.