macos

[DOC] Tweaks for StringIO#each_line #567

Job	Run time
ruby-versions / Generate Ruby versions	4s
macos-13 3.0	22s
macos-13 3.1	29s
macos-13 3.3	31s
macos-13 3.2	24s
macos-14 3.0	18s
macos-13 2.7	1m 28s
macos-13 jruby-head	2m 12s
macos-14 3.1	17s
macos-13 debug	36s
macos-13 head	25s
macos-14 2.7	33s
macos-13 3.4	27s
macos-14 3.4	19s
macos-14 debug	17s
macos-14 3.3	15s
macos-14 head	19s
macos-14 3.2	17s
macos-14 jruby-head	39s
	10m 12s

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