Yes, Faraday 2.x support shipped. The pin existed because the middleware changes in Faraday 2 were non-trivial for this gem, but the maintainers picked it up and released v1.38.0.rc1, a release candidate with Faraday 2 support. So if Faraday 2 is blocking your bundle, update to v1.38.0.rc1 or a newer release that carries the support.
Source: https://github.com/zendesk/zendeskapiclient_rb/issues/488
Source: https://github.com/zendesk/zendeskapiclient_rb/issues/488