Move check-new-windows-versions.yml workflow from ruby/ruby-builder to ruby/setup-ruby #1752

Job	Run time
Test mise.toml	7s
Test with no Gemfile but with bundler-cache	23s
Test with no Gemfile	23s
test-matrix	5s
Test .tool-versions	6s
Test windows-toolchain: none	30s
Test bundler: 1.x for old Ruby	20s
Test with a Bundler pre/rc version	21s
Test .ruby-version	5s
Test with a minor Bundler version	23s
Test BUNDLED WITH Bundler dev	6s
Test rubygems: version uses the Bundler installed by the rubygems update	14s
Test rubygems: latest on 2.3	23s
Test with rails7 gemfile	13s
Test rubygems: version upgrades RubyGems to that version if the default is older	22s
Test rubygems: latest on 2.6	26s
Check windows*versions.json are up-to-date	5s
Test rubygems: version noops if the default is newer	6s
Test with rails8 gemfile	13s
Test rubygems: latest on 2.7	22s
Test with an older Bundler version than the one of the default gem	9s
Test gemfile depending on Bundler 1	26s
Test rubygems: latest on 2.0	8s
Check dist/index.js is up-to-date	22s
Test rubygems: latest on 2.5	25s
Test with a major Bundler version	22s
Test with an exact Bundler version	21s
Test rubygems: latest on 3.0	9s
Test rubygems: latest on 3.2	11s
${{ matrix.os }} ${{ matrix.ruby }}	0s
	7m 46s

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