All tests passing on JRuby extension #358

Job	Run time
ruby-versions / Generate Ruby versions	2s
windows-latest 2.7	2m 55s
windows-latest 3.0	1m 36s
windows-latest 3.1	1m 39s
windows-latest 3.2	1m 44s
windows-latest 3.3	1m 3s
windows-latest 3.4	1m 51s
windows-latest jruby-head	1m 36s
windows-latest mingw	1m 18s
windows-latest mswin	1m 29s
	15m 13s

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