Prepare 6.3.1 release #420

Job	Run time
PHPStan (PHP 7.4, Symfony 4.4.* + highest deps)	29s
PHPStan (PHP 7.4, Symfony 5.4.* + highest deps)	46s
PHPStan (PHP 8.1, Symfony 4.4.* + highest deps)	38s
PHPStan (PHP 8.1, Symfony 5.4.* + highest deps)	36s
PHPStan (PHP 8.1, Symfony 6.2.* + highest deps)	38s
PHPStan (PHP 8.2, Symfony 4.4.* + highest deps)	33s
PHPStan (PHP 8.2, Symfony 5.4.* + highest deps)	34s
PHPStan (PHP 8.2, Symfony 6.2.* + highest deps)	34s
PHPStan (PHP 7.4, Symfony 4.4.* + lowest deps)	31s
Coding style	25s
PHPUnit (PHP 7.4, Symfony 4.4.* + highest deps, ES 7.11.0)	1m 28s
PHPUnit (PHP 7.4, Symfony 5.4.* + highest deps, ES 7.11.0)	1m 3s
PHPUnit (PHP 8.1, Symfony 4.4.* + highest deps, ES 7.11.0)	1m 13s
PHPUnit (PHP 8.1, Symfony 5.4.* + highest deps, ES 7.11.0)	1m 4s
PHPUnit (PHP 8.1, Symfony 6.2.* + highest deps, ES 7.11.0)	1m 2s
PHPUnit (PHP 8.2, Symfony 4.4.* + highest deps, ES 7.11.0)	1m 5s
PHPUnit (PHP 8.2, Symfony 5.4.* + highest deps, ES 7.11.0)	1m 6s
PHPUnit (PHP 8.2, Symfony 6.2.* + highest deps, ES 7.11.0)	1m 27s
PHPUnit (PHP 7.4, Symfony 4.4.* + lowest deps, ES 7.0.0)	1m 2s
	16m 14s

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