Prevent concurrent changes on user permissions #7538

Job	Run time
Javascript	3m 23s
Client	1m 10s
PHP (UnitTests, 7.2, Mysql, PDO_MYSQL)	2m 47s
UI (0)	17m 39s
PHP (UnitTests, 8.2, Mariadb, PDO_MYSQL)	3m 5s
PHP (UnitTests, 8.4, Mysql, MYSQLI)	2m 49s
PHP (SystemTestsPlugins, 7.2, Mysql, PDO_MYSQL)	13m 43s
PHP (SystemTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	12m 45s
UI (1)	38m 16s
PHP (SystemTestsPlugins, 8.4, Mysql, MYSQLI)	15m 39s
UI (2)	17m 25s
PHP (SystemTestsCore, 7.2, Mysql, PDO_MYSQL)	9m 51s
UI (3)	17m 47s
PHP (SystemTestsCore, 8.2, Mariadb, PDO_MYSQL)	8m 25s
PHP (SystemTestsCore, 8.4, Mysql, MYSQLI)	10m 17s
PHP (IntegrationTestsCore, 7.2, Mysql, PDO_MYSQL)	11m 31s
PHP (IntegrationTestsCore, 8.2, Mariadb, PDO_MYSQL)	12m 18s
PHP (IntegrationTestsCore, 8.4, Mysql, MYSQLI)	15m 15s
PHP (IntegrationTestsPlugins, 7.2, Mysql, PDO_MYSQL)	35m 31s
PHP (IntegrationTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	33m 10s
PHP (IntegrationTestsPlugins, 8.4, Mysql, MYSQLI)	42m 51s
	5h 25m 37s

Provide feedback