Add configuration for database connection collation #6207

Job	Run time
PHP (UnitTests, 7.2, Mysql, PDO_MYSQL)	1m 31s
PHP (UnitTests, 8.2, Mariadb, PDO_MYSQL)	1m 11s
Javascript	3m 16s
PHP (UnitTests, 8.3, Mysql, MYSQLI)	42s
Client	1m 23s
PHP (SystemTestsPlugins, 7.2, Mysql, PDO_MYSQL)	3m 4s
PHP (SystemTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	2m 18s
UI (0)	4m 33s
PHP (SystemTestsPlugins, 8.3, Mysql, MYSQLI)	1m 47s
UI (1)	4m 34s
PHP (SystemTestsCore, 7.2, Mysql, PDO_MYSQL)	4m 29s
UI (2)	4m 34s
PHP (SystemTestsCore, 8.2, Mariadb, PDO_MYSQL)	4m 20s
UI (3)	4m 34s
PHP (SystemTestsCore, 8.3, Mysql, MYSQLI)	2m 30s
PHP (IntegrationTestsCore, 7.2, Mysql, PDO_MYSQL)	4m 34s
PHP (IntegrationTestsCore, 8.2, Mariadb, PDO_MYSQL)	4m 32s
PHP (IntegrationTestsCore, 8.3, Mysql, MYSQLI)	3m 34s
PHP (IntegrationTestsPlugins, 7.2, Mysql, PDO_MYSQL)	4m 33s
PHP (IntegrationTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	4m 32s
PHP (IntegrationTestsPlugins, 8.3, Mysql, MYSQLI)	2m 41s
	1h 9m 12s

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