minor #3151 Update gitattributes to ignore next file (keradus)
minor #3151 Update gitattributes to ignore next file (keradus)

This PR was squashed before being merged into the 2.2 branch (closes #3151).

Discussion
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Update gitattributes to ignore next file

Commits
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2ceb69b0 Update gitattributes to ignore next file

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