Release 2.12.0 #1012

Job	Run time
Ruby memcheck	2m 8s
ruby-versions / Generate Ruby versions	3s
ubuntu-latest 2.7	50s
ubuntu-latest 3.0	33s
ubuntu-latest 3.1	26s
ubuntu-latest 3.2	26s
ubuntu-latest 3.3	34s
ubuntu-latest 3.4	27s
ubuntu-latest head	1m 27s
ubuntu-latest jruby	1m 3s
ubuntu-latest jruby-head	5m 33s
macos-14 2.7	1m 0s
macos-14 3.0	20s
macos-14 3.1	31s
macos-14 3.2	19s
macos-14 3.3	19s
macos-14 3.4	20s
macos-14 head	19s
macos-14 jruby	42s
macos-14 jruby-head	42s
windows-latest 2.7	4m 17s
windows-latest 3.0	2m 58s
windows-latest 3.1	2m 48s
windows-latest 3.2	2m 24s
windows-latest 3.3	2m 43s
windows-latest 3.4	4m 11s
windows-latest head	49s
ubuntu-24.04-arm 3.4	30s
ubuntu-latest 3.4 JSON_DISABLE_SIMD=1	24s
macos-13 3.4	35s
windows-latest mswin	1m 6s
ubuntu-latest jruby-9.4	1m 8s
macos-latest truffleruby-head	35s
ubuntu-latest truffleruby-head	1m 53s
	44m 23s

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