macos

Add a workflow to sync commits to ruby/ruby (#143) #489

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-13 3.1	42s
macos-13 3.0	33s
macos-13 2.7	1m 19s
macos-13 3.4	37s
macos-13 head	35s
macos-13 debug	41s
macos-13 jruby-head	1m 57s
macos-13 3.3	30s
macos-13 3.2	33s
macos-14 2.7	33s
macos-14 3.0	25s
macos-14 3.1	21s
macos-14 3.4	18s
macos-14 3.2	20s
macos-14 3.3	19s
macos-14 jruby-head	50s
macos-14 debug	27s
macos-14 head	22s
	11m 25s

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