[ticket/17135] Introduce Symfony Mailer for emails backend #2943

Job	Run time
PHP 8.1 - postgres:9.5	13m 33s
PHP 8.1 - none	2m 4s
PHP 8.1 - postgres:9.6	13m 43s
PHP 8.1 - sqlite3	11m 42s
PHP 8.1 - postgres:10	13m 14s
PHP 8.1 - MSSQL 2017	16m 30s
PHP 8.1 - postgres:11	13m 5s
PHP 8.1 - MSSQL 2019	16m 10s
Windows - unit - PHP 8.1 - postgres	6m 50s
PHP 8.1 - mariadb:10.2	5m 3s
PHP 8.1 - postgres:12	13m 11s
PHP 8.1 - MSSQL 2022	18m 13s
Windows - unit - PHP 8.2 - postgres	7m 7s
PHP 8.1 - mariadb:10.3	4m 58s
PHP 8.1 - postgres:13	13m 19s
Windows - functional - PHP 8.1 - postgres	25m 14s
PHP 8.1 - mariadb:10.4	3m 24s
PHP 8.1 - postgres:14	13m 16s
Windows - functional - PHP 8.2 - postgres	25m 43s
PHP 8.1 - mariadb:10.6	3m 21s
PHP 8.1 - postgres:15	13m 3s
PHP 8.1 - mariadb:10.9	3m 18s
PHP 8.2 - postgres:9.5	12m 43s
PHP 8.1 - mariadb:10.10	2m 58s
PHP 8.3 - postgres:9.5	12m 59s
PHP 8.1 - mariadb:10.11	9m 26s
PHP 8.1 - MySQL Slow Tests	2m 12s
PHP 8.1 - MyISAM Tests	2m 36s
PHP 8.1 - mysql:5.7	2m 55s
PHP 8.1 - mysql:8.0	1m 34s
PHP 8.1 - mysql:8.1	19s
PHP 8.2 - mysql:8.0	1s
PHP 8.2 - mariadb:10.2	1m 30s
PHP 8.3 - mysql:5.7	1s
PHP 8.3 - mariadb:10.2	15s
	5h 5m 30s

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