Update commonmarker #1624

Job	Run time
benchmark-graph	45s
benchmark-ractor (head)	7m 3s
benchmark-run-once	1m 35s
benchmark-default (head)	14m 50s
benchmark-ractor-only (head)	35s
test (ruby)	52s
benchmark-default (truffleruby)	14m 24s
benchmark-default (ruby)	15m 8s
test (head)	1m 0s
test (truffleruby)	1m 0s
all-tests	2s
	57m 14s

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