Symfony version(s) affected: 4.0.9 (symfony/console)

Description

https://github.com/symfony/symfony/blob/v4.0.9/src/Symfony/Component/Console/Helper/QuestionHelper.php#L309
This shell_exec will permanently hang while running through a phpunit (my version: 7.1.5) test

How to reproduce

Run a test with phpunit that utilizes the getHiddenResponse method (such as the Laravel console $this->secret)