Add 3.2.0 entry #573

Job	Run time
ruby-versions / Generate Ruby versions	6s
windows-latest 3.1	1m 31s
windows-latest 3.0	1m 12s
windows-latest 2.7	2m 12s
windows-latest 3.3	1m 24s
windows-latest 3.2	1m 7s
windows-latest mswin	59s
windows-latest jruby-head	2m 0s
windows-latest 3.4	57s
windows-latest mingw	1m 1s
	12m 29s

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