Merge pull request #445 from ruby/rmf-multiple-benches-per-folder #1526

Job	Run time
test (head)	58s
test (truffleruby)	55s
benchmark-ractor-only (ruby)	55s
benchmark-default (head)	11m 1s
benchmark-ractor (head)	12m 22s
benchmark-ractor (ruby)	12m 41s
test (ruby)	58s
benchmark-default (truffleruby)	15m 56s
benchmark-graph	47s
benchmark-ractor-only (head)	46s
benchmark-run-once	1m 30s
benchmark-default (ruby)	10m 54s
all-tests	2s
	1h 9m 45s

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