build

Only install debug with CRuby #2928

Job	Run time
ruby-versions / Generate Ruby versions	7s
rake test 2.7 (latest reline)	56s
vterm-yamatanooroti 2.7 (latest reline)	1m 12s
rake test 2.7	55s
rake test 3.0 (latest reline)	53s
vterm-yamatanooroti 2.7	1m 19s
rake test 3.0	48s
vterm-yamatanooroti 3.0 (latest reline)	58s
rake test 3.1 (latest reline)	55s
vterm-yamatanooroti 3.0	59s
rake test 3.1	51s
vterm-yamatanooroti 3.1 (latest reline)	56s
rake test 3.2 (latest reline)	48s
vterm-yamatanooroti 3.1	1m 1s
rake test 3.2	48s
vterm-yamatanooroti 3.2 (latest reline)	1m 1s
rake test head (latest reline)	52s
vterm-yamatanooroti 3.2	55s
rake test head	52s
rake test truffleruby-head (latest reline)	2m 47s
vterm-yamatanooroti head (latest reline)	51s
rake test truffleruby-head	2m 54s
vterm-yamatanooroti head	56s
	24m 34s

Provide feedback