Fix tests compatibility with `league/oauth2-server:^9.1` #491

Job	Run time
PHP 8.1 - Doctrine ^2.14 - Symfony 5.4.* - Composer --prefer-stable	1m 38s
PHP 8.1 - Doctrine ^3.0 - Symfony 5.4.* - Composer --prefer-stable	1m 32s
PHP 8.1 - Doctrine ^2.14 - Symfony 6.4.* - Composer --prefer-stable	1m 26s
PHP 8.1 - Doctrine ^3.0 - Symfony 6.4.* - Composer --prefer-stable	1m 46s
PHP 8.2 - Doctrine ^2.14 - Symfony 5.4.* - Composer --prefer-stable	1m 19s
PHP 8.2 - Doctrine ^3.0 - Symfony 5.4.* - Composer --prefer-stable	1m 38s
PHP 8.2 - Doctrine ^2.14 - Symfony 6.4.* - Composer --prefer-stable	1m 47s
PHP 8.2 - Doctrine ^3.0 - Symfony 6.4.* - Composer --prefer-stable	1m 24s
PHP 8.2 - Doctrine ^2.14 - Symfony 7.0.* - Composer --prefer-stable	1m 26s
PHP 8.2 - Doctrine ^3.0 - Symfony 7.0.* - Composer --prefer-stable	1m 27s
PHP 8.3 - Doctrine ^2.14 - Symfony 5.4.* - Composer --prefer-stable	1m 25s
PHP 8.3 - Doctrine ^3.0 - Symfony 5.4.* - Composer --prefer-stable	1m 28s
PHP 8.3 - Doctrine ^2.14 - Symfony 6.4.* - Composer --prefer-stable	1m 24s
PHP 8.3 - Doctrine ^3.0 - Symfony 6.4.* - Composer --prefer-stable	1m 23s
PHP 8.3 - Doctrine ^2.14 - Symfony 7.0.* - Composer --prefer-stable	1m 21s
PHP 8.3 - Doctrine ^3.0 - Symfony 7.0.* - Composer --prefer-stable	1m 45s
PHP 8.1 - Doctrine ^2.14 - Symfony 5.4.* - Composer --prefer-stable --prefer-lowest	1m 26s
	25m 35s

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