Fix CI and ruby-lsp benchmark #1606

Job	Run time
benchmark-run-once	1m 39s
benchmark-ractor-only (head)	38s
benchmark-ractor (head)	6m 53s
test (ruby)	53s
test (head)	1m 3s
benchmark-default (truffleruby)	15m 35s
benchmark-default (head)	12m 12s
benchmark-default (ruby)	12m 23s
test (truffleruby)	2m 16s
benchmark-graph	56s
all-tests	4s
	54m 32s

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