Use the $CI_DEFAULT_BRANCH variable in the metadata Danger rule
This will make it easier to reuse this rule in other projects, e.g. https://gitlab.com/gitlab-org/customers-gitlab-com/-/merge_requests/4467.
Edited by Rémy Coutable
This will make it easier to reuse this rule in other projects, e.g. https://gitlab.com/gitlab-org/customers-gitlab-com/-/merge_requests/4467.