Fix republishing of dependent editions
Fix republishing of dependent editions

We need to populate the dependencies before we can republish them.

This regression was introduced with
e9e8c575fecdf4b6af80b44853f94a24a1b71093

Reported with https://govuk.zendesk.com/agent/tickets/3483085

alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall