CI: Run Symfony 6 compat check on PHP 8.1 (#7383) #832

Job	Run time
PHP 7.4 with lowest deps	5m 39s
PHP 7.4 with PHPDoc to type rules	6m 31s
PHP 7.4 with Symfony ^5	5m 41s
PHP 8.0	6m 11s
PHP 8.1 with Symfony ^6	6m 46s
PHP 8.2 with migration rules	9m 27s
PHP 8.2 auto-review	1m 48s
PHP 8.2 with calculating code coverage	12m 57s
PHP 8.2 with deployment	8m 45s
PHP 8.3	6m 20s
PHP 8.2 on Windows	4m 33s
PHP 8.2 on macOS	4m 4s
	1h 18m 42s

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