Distribution: Ruby 3.3 support
Epic to collect the various changes needed in Distribution projects to support switching Ruby to version 3.3. - gitlab-org#12350
Steps:
1. [x] Support building Ruby 3.3 - gitlab-org/omnibus-gitlab#8759+ and gitlab-org/build/CNG#2102+
1. [x] Switch feature branch builds to Ruby 3.3 - gitlab-org/omnibus-gitlab#8961+ and gitlab-org/build/CNG#2157+
1. [x] Switch nightlies to Ruby 3.3
1. [x] Switch auto-deploy to Ruby 3.3 - https://gitlab.com/gitlab-com/gl-infra/production/-/work_items/21065
1. [x] Switch self-managed releases to Ruby 3.3 - gitlab-org/omnibus-gitlab#8965+ and gitlab-org/build/CNG#2158+
Previous work: gitlab-org#12219+
epic