Merge branch '4.0' into 4.1 #671

Job	Run time
ci / Context	1s
ci / Generate matrix	19s
ci / Check governance	1s
ci / 8.1 prf-low mysql57 phpunit all	59s
ci / 8.1 mariadb phpunit all	4m 49s
ci / 8.1 mysql80 phpunit all	6m 27s
ci / 8.1 mysql57 phplinting	1m 37s
ci / 8.1 mysql57 endtoend root job1	5m 9s
ci / 8.1 mysql80 endtoend root job1	6m 27s
ci / 8.1 mysql57 endtoend root job2	7m 12s
ci / 8.1 mysql80 endtoend root job2	7m 20s
ci / 8.1 mysql57 js	4m 2s
ci / 8.1 mysql57 doclinting	2m 37s
ci / Dispatch tag patch release	0s
	47m 0s

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