Use ruby-core-tasks #470

Job	Run time
ruby-versions / Generate Ruby versions	4s
ruby-versions / Generate Ruby versions	4s
ruby-versions / Generate Ruby versions	4s
ubuntu-24.04 2.7	48s
ubuntu-24.04 2.7	48s
ubuntu-24.04 2.7	48s
ubuntu-24.04 3.0	16s
ubuntu-24.04 3.0	16s
ubuntu-24.04 3.0	16s
ubuntu-24.04 3.1	11s
ubuntu-24.04 3.1	11s
ubuntu-24.04 3.1	11s
ubuntu-24.04 3.2	14s
ubuntu-24.04 3.2	14s
ubuntu-24.04 3.2	14s
ubuntu-24.04 3.3	16s
ubuntu-24.04 3.3	16s
ubuntu-24.04 3.3	16s
ubuntu-24.04 3.4	11s
ubuntu-24.04 3.4	11s
ubuntu-24.04 3.4	11s
ubuntu-24.04 debug	29s
ubuntu-24.04 debug	29s
ubuntu-24.04 debug	29s
ubuntu-24.04 head	21s
ubuntu-24.04 head	21s
ubuntu-24.04 head	21s
ubuntu-24.04 jruby-head	1m 9s
ubuntu-24.04 jruby-head	1m 9s
ubuntu-24.04 jruby-head	1m 9s
ubuntu-24.04 truffleruby-head	9s
ubuntu-24.04 truffleruby-head	23s
ubuntu-24.04 truffleruby-head	23s
ubuntu-22.04 2.7	40s
ubuntu-22.04 2.7	40s
ubuntu-22.04 2.7	40s
ubuntu-22.04 3.0	11s
ubuntu-22.04 3.0	11s
ubuntu-22.04 3.0	11s
ubuntu-22.04 3.1	14s
ubuntu-22.04 3.1	14s
ubuntu-22.04 3.1	14s
ubuntu-22.04 3.2	15s
ubuntu-22.04 3.2	15s
ubuntu-22.04 3.2	15s
ubuntu-22.04 3.3	15s
ubuntu-22.04 3.3	15s
ubuntu-22.04 3.3	15s
ubuntu-22.04 3.4	22s
ubuntu-22.04 3.4	22s
ubuntu-22.04 3.4	22s
ubuntu-22.04 debug	27s
ubuntu-22.04 debug	27s
ubuntu-22.04 debug	27s
ubuntu-22.04 head	20s
ubuntu-22.04 head	20s
ubuntu-22.04 head	20s
ubuntu-22.04 jruby-head	1m 16s
ubuntu-22.04 jruby-head	1m 16s
ubuntu-22.04 jruby-head	1m 16s
ubuntu-22.04 truffleruby-head	8s
ubuntu-22.04 truffleruby-head	8s
ubuntu-22.04 truffleruby-head	27s
	25m 35s

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