Add JSON as an alternative to PHP/CSS file headers for plugin and theme metadata #33180

Job	Run time
Determine Matrix	4s
Multisite Default / Test current	15m 38s
Single Site Default / Test before	14m 37s
Multisite Default / Test before	15m 18s
Multisite Memcached / Test before	15m 19s
Single Site Memcached / Test current	15m 9s
Multisite Memcached / Test current	15m 1s
Single Site Memcached / Test before	15m 30s
Single Site Default / Test current	15m 0s
Compare / Multisite Default	23s
Compare / Multisite Memcached	19s
Compare / Single Site Default	23s
Compare / Single Site Memcached	22s
Slack Notifications	0s
Failed workflow tasks	0s
	2h 3m 3s

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