Revert ruby version back to 2.7.7 due to pipeline failures
What does this MR do and why?
Describe in detail what your merge request does and why.
Pipeline failure caused by Ruby 3: https://ops.gitlab.net/gitlab-org/release/tools/-/jobs/9611603. This failure was caused by positional arguments being passed to a method that takes keyword arguments: auto_deploy/coordinated_pipeline/notifier.rb#L71. In Ruby 2.7.7, this is acceptable, but in Ruby 3, positional and keyword arguments are separated.
Ruby version was upgraded to 3.2.1 in !2248 (merged).
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Has documentation been updated?
Edited by Reuben Pereira