macos

Use private lookup for these handles #397

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-13 2.7	49s
macos-13 3.0	18s
macos-13 3.1	19s
macos-13 3.2	22s
macos-13 3.3	19s
macos-13 3.4	19s
macos-13 debug	17s
macos-13 head	12s
macos-14 2.7	38s
macos-14 3.0	14s
macos-14 3.1	13s
macos-14 3.2	14s
macos-14 3.3	13s
macos-14 3.4	15s
macos-14 debug	16s
macos-14 head	10s
	5m 11s

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