Development of 3.2.1 started. #574

Job	Run time
ruby-versions / Generate Ruby versions	4s
windows-latest 3.2	1m 46s
windows-latest 3.3	1m 24s
windows-latest 3.1	1m 30s
windows-latest mingw	1m 18s
windows-latest 3.4	1m 25s
windows-latest 2.7	2m 25s
windows-latest 3.0	1m 49s
windows-latest jruby-head	2m 22s
windows-latest mswin	1m 35s
	15m 38s

Provide feedback