Update to the latest CRuby releases in CI #1902

Job	Run time
RuboCop	45s
specs (ubuntu, 3.1.6)	1m 33s
specs (ubuntu, 3.2.6)	1m 25s
specs (ubuntu, 3.3.7)	1m 30s
specs (ubuntu, 3.4.1)	1m 40s
specs (macos, 3.1.6)	1m 24s
specs (macos, 3.2.6)	1m 18s
specs (macos, 3.3.7)	1m 21s
specs (macos, 3.4.1)	1m 13s
specs (windows, 3.1.6)	4m 28s
specs (windows, 3.2.6)	3m 59s
specs (windows, 3.3.7)	3m 40s
specs (windows, 3.4.1)	3m 50s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 26s
	29m 32s

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