Merge pull request #1625 from ychin/ci-revert-use-ruby34 #1081

Job	Run time
build-and-test (macos-15, 16.4, false, true, true) / build-and-test	23m 27s
build-and-test (macos-14, 15.4, true, vimtags, check-xcodeproj-compat) / build-and-test	16m 24s
build-and-test (macos-13-xcode14-self-hosted, true, _10.9, true, true) / build-and-test	-1s
	39m 50s

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