Bring back Go 1.20 to build older Workhorse images

Stan Hurequested to merge
sh-rebuild-go-1.20-workhorse into master

What does this MR do and why?

gitlab!157451 (merged) backported a number of changes for the 16-11-stable-ee branch:

  • Ruby 3.1.5 is used instead of 3.1.4
  • The image tag uses the full Ruby version (e.g. ruby-3.1.5) instead of just the minor release (ruby-3.1).

To get 16.11 builds working again, let's rebuild the Workhorse images for Ruby 3.1.5 and Go 1.20.

Checklist

Edited by Stan Hu

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