Merge pull request #452 from ruby/mvh-persist-yjit-results #1555

Job	Run time
test (head)	1m 9s
benchmark-default (head)	11m 10s
benchmark-default (ruby)	10m 46s
test (ruby)	56s
benchmark-ractor (head)	12m 38s
benchmark-ractor (ruby)	13m 44s
benchmark-run-once	1m 25s
benchmark-default (truffleruby)	14m 32s
test (truffleruby)	1m 3s
benchmark-ractor-only (head)	47s
benchmark-ractor-only (ruby)	55s
benchmark-graph	49s
all-tests	2s
	1h 9m 56s

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