minor #4210 [7.3] PhpUnitConstructFixer - add test for PHP 7.3 (kubawerlos)
minor #4210 [7.3] PhpUnitConstructFixer - add test for PHP 7.3 (kubawerlos)

This PR was merged into the 2.12 branch.

Discussion
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[7.3] PhpUnitConstructFixer - add test for PHP 7.3

Commits
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52b06747 [7.3] PhpUnitConstructFixer - add test for PHP 7.3

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