[PHPUnitBridge] Support PHPUnit 8 and PHPUnit 9 in constraint compatibility trait#38681

fabpot merged 1 commit intosymfony:4.4symfony/symfony:4.4from

alcaeus:phpunit-bridge-phpunit-9-compat-layeralcaeus/symfony:phpunit-bridge-phpunit-9-compat-layerCopy head branch name to clipboard