Update the pinned `gutenberg` hash. #33248

Job	Run time
Determine Matrix	4s
Multisite Default / Test current	15m 30s
Multisite Memcached / Test current	14m 53s
Multisite Memcached / Test before	14m 56s
Single Site Default / Test current	15m 9s
Multisite Default / Test before	15m 3s
Single Site Memcached / Test current	15m 17s
Single Site Default / Test before	15m 10s
Single Site Memcached / Test before	14m 58s
Compare / Multisite Default	26s
Compare / Single Site Memcached	20s
Compare / Single Site Default	17s
Slack Notifications	0s
Compare / Multisite Memcached	22s
Failed workflow tasks	-1s
	2h 2m 24s

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