Run actions/setup-ruby@v1
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NOTE: This action is deprecated and is no longer maintained.
Please, migrate to https://github.com/ruby/setup-ruby, which is being actively maintained.
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Error: Version 2.6.x not found
It seems the GitHub action to support ruby is now broken. This is the latest build log
https://github.com/w3c/wai-website/actions/runs/3616931732/jobs/6095331109