macos

Use ruby-core-tasks #470

Job	Run time
ruby-versions / Generate Ruby versions	4s
macos-13 2.7	1m 19s
macos-13 3.0	23s
macos-13 3.1	24s
macos-13 3.2	26s
macos-13 3.3	22s
macos-13 3.4	23s
macos-13 debug	37s
macos-13 head	42s
macos-14 2.7	42s
macos-14 3.0	15s
macos-14 3.1	15s
macos-14 3.2	19s
macos-14 3.3	17s
macos-14 3.4	15s
macos-14 debug	25s
macos-14 head	23s
	7m 31s

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