Brad Downey authored Dec 20, 2021 and Matthias Käppler committed Dec 20, 2021

Add aud to JWT.
Change iss format to include protocol
Change sub from job_id to a string that contains project:ref_type:ref
Update spec to validate iss, sub, and aud changes.
Add alpha tag to Predefined Variables documentation.

Changelog: changed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/72555