Unfortunately goreleaser objects to releasing on the main branch as
there is no tag.

For the cases in which we're using this mode, that's not a problem, so
we add the `--skip=validation` flag to `goreleaser release` to allow it
to continue.

fix: skip validation for GORELEASER_RELEASE_ON_DEFAULT_BRANCH

See merge request !992

## [2.71.2](https://gitlab.com/gitlab-com/gl-infra/common-ci-tasks/-/compare/...) (2025-04-10)

### Fixes

* skip validation for GORELEASER_RELEASE_ON_DEFAULT_BRANCH ([6c3460ed](6c3460ed))