Note that this article applies to local RubyGems repositories: to manage the /dependencies deprecation for remote repositories, see: ARTIFACTORY: RubyGems.org Dependency API Deprecation.
RubyGems has deprecated their support of the /dependencies REST API back in May 2023 impacting our Remote Repositories, and JFrog is now removing the support for the same API against our Local repositories to finalize the alignment with the RubyGems registry.
For more information, please read this blog post by RubyGems: RubyGems.org Dependency API Deprecation.
Gems Local repositories /dependencies REST API will reach end-of-life on June 1st, 2024.