All tests passing on JRuby extension #351

Job	Run time
ruby-versions / Generate Ruby versions	3s
windows-latest 2.7	3m 24s
windows-latest 3.0	1m 8s
windows-latest 3.1	1m 58s
windows-latest 3.2	1m 20s
windows-latest 3.3	1m 7s
windows-latest 3.4	1m 55s
windows-latest jruby-head	2m 20s
windows-latest mingw	1m 33s
windows-latest mswin	1m 34s
	16m 22s

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