Merge pull request #1623 from ychin/ci-use-ruby34 #1075

Job	Run time
build-and-test (macos-14, 15.4, true, vimtags, check-xcodeproj-compat) / build-and-test	12m 24s
build-and-test (macos-15, 16.4, false, true, true) / build-and-test	19m 36s
build-and-test (macos-13-xcode14-self-hosted, true, _10.9, true, true) / build-and-test	0s
	32m 0s

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