macos

Add jruby-head to macos CI builds #483

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-13 2.7	1m 12s
macos-13 3.0	27s
macos-13 3.2	21s
macos-13 3.4	24s
macos-13 3.1	26s
macos-13 3.3	22s
macos-13 head	26s
macos-13 debug	56s
macos-13 jruby-head	1m 52s
macos-14 2.7	34s
macos-14 3.0	16s
macos-14 3.1	18s
macos-14 3.2	16s
macos-14 3.4	15s
macos-14 3.3	17s
macos-14 head	16s
macos-14 debug	24s
macos-14 jruby-head	49s
	9m 54s

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