macos

Remove unused `stdbool.h` #365

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-12 2.7	45s
macos-12 3.0	15s
macos-12 3.1	20s
macos-12 3.2	20s
macos-12 3.3	20s
macos-12 debug	29s
macos-12 head	20s
macos-14 2.7	25s
macos-14 3.0	15s
macos-14 3.1	16s
macos-14 3.2	15s
macos-14 3.3	16s
macos-14 debug	18s
macos-14 head	14s
	4m 51s

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