macos

Suppress warnings against pattern matching on ruby 2.7 #573

Job	Run time
ruby-versions / Generate Ruby versions	4s
macos-13 3.0	23s
macos-13 2.7	2m 7s
macos-13 3.1	17s
macos-13 3.3	21s
macos-13 3.4	27s
macos-13 head	22s
macos-13 3.2	26s
macos-13 debug	32s
macos-14 2.7	36s
macos-14 3.1	16s
macos-14 3.3	15s
macos-13 jruby-head	1m 25s
macos-14 3.0	13s
macos-14 3.2	19s
macos-14 debug	18s
macos-14 3.4	15s
macos-14 head	29s
macos-14 jruby-head	38s
	9m 43s

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