API Rename validator classes #711

Job	Run time
ci / Generate matrix	13s
ci / Context	1s
ci / Check governance	0s
ci / 8.3 prf-low mariadb phpunit all	3m 26s
ci / 8.3 mysql80 phpunit all	3m 41s
ci / 8.4 mysql84 phpunit all	3m 38s
ci / 8.3 mysql80 phplinting	1m 49s
ci / 8.3 mysql80 endtoend root job1	7m 40s
ci / 8.4 mysql84 endtoend root job1	7m 46s
ci / 8.3 mysql80 endtoend root job2	13m 22s
ci / 8.4 mysql84 endtoend root job2	13m 59s
ci / 8.3 mysql80 js	4m 25s
ci / 8.3 mysql80 doclinting	3m 1s
ci / Dispatch tag patch release	0s
	1h 3m 1s

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