Authorization is not always necessary, for example, it is not necessary to publish artifacts to public repositories. In the previous version, it was possible not to specify the token or the path to the file, but in the latest version it became mandatory
https://github.com/gilcloud/sbt-gitlab/blob/0b9f938f949eb018280040a3185c8832150896ff/src/main/scala/com/gilcloud/sbt/gitlab/GitlabPlugin.scala#L72
Authorization is not always necessary, for example, it is not necessary to publish artifacts to public repositories. In the previous version, it was possible not to specify the token or the path to the file, but in the latest version it became mandatory