Add native support for OIDC
- Support for OpenID has been dropped (see #35755)
- The only OIDC plugin only supports version 3.4.x of redmine
There is currently no way to implement SSO in current and future versions of redmine, other than creating a custom plugin, which certainly requires in-depth knowledge of ruby on rails, putting it out of reach of many.
I'm sure it would be useful to many of us redmine administrators to have redmine natively support OIDC.