Enable RubyGems MFA for Ruby repos

[nhtruong]

Is your feature request related to a problem? Please describe

If possible, we should enable MFA when interacting with Rubygems.org to improve security for our Ruby Gems.

I am aware that our one-click release pipeline automates most of the release process and adding an MFA might defeat the purpose of the pipeline (as someone from the build team will have to get involved in every Ruby Gem release). So, if we have already explored this avenue and determined that MFA is more troublesome than it's worth, please close this ticket.

Describe the solution you'd like

• Update Release Workflow to use MFA when publish to Rubygems.org.
• Update gemspec of our ruby gems to opt-in to MFA

[gaiksaya]

I believe MFA is enabled at the account level. Hence if we enable it wondering if we need to add the add the requirement in all gemspec files of all rubies under opensearch-project?
Also need to research a bit on MFA requirements when publishing a gem? Will it pop up MFA while publishing too?
Thanks!