Use private lookup for these handles (#113) #400

Job	Run time
ruby-versions / Generate Ruby versions	1s
ubuntu-24.04 2.7	48s
ubuntu-24.04 3.0	18s
ubuntu-24.04 3.1	19s
ubuntu-24.04 3.2	22s
ubuntu-24.04 3.3	22s
ubuntu-24.04 3.4	23s
ubuntu-24.04 debug	28s
ubuntu-24.04 head	23s
ubuntu-24.04 jruby-head	1m 13s
ubuntu-24.04 truffleruby-head	40s
ubuntu-22.04 2.7	48s
ubuntu-22.04 3.0	26s
ubuntu-22.04 3.1	23s
ubuntu-22.04 3.2	17s
ubuntu-22.04 3.3	24s
ubuntu-22.04 3.4	19s
ubuntu-22.04 debug	27s
ubuntu-22.04 head	17s
ubuntu-22.04 jruby-head	1m 25s
ubuntu-22.04 truffleruby-head	40s
	10m 43s

Provide feedback