Update release related github actions

[fantapop]

The release process was still not working. This change updates these actions to to the latest versions:

ghaction-import-gpg goreleaser-action

Additionally it removes the version pinning of goreleaser and lets the action default that instead.

Commit checklist

• [ ] Changelog
• [ ] Doc gen (make generate)
• [ ] Integration test(s)
• [ ] Acceptance test(s)
• [ ] Example(s)