minor #3676 RunnerTest - workaround for failing Symfony v2.8.37 (kubawerlos)
minor #3676 RunnerTest - workaround for failing Symfony v2.8.37 (kubawerlos)

This PR was squashed before being merged into the 2.2 branch (closes #3676).

Discussion
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RunnerTest - workaround for failing Symfony v2.8.37

[This](https://github.com/symfony/symfony/pull/26337/files) change was released with Symfony v2.8.37 today.

Commits
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53fe60de RunnerTest - workaround for failing Symfony v2.8.37

SpacePossum/PHP-CS-Fixer,keradus/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,Slamdunk/PHP-CS-Fixer,Slamdunk/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,SpacePossum/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,keradus/PHP-CS-Fixer