DX: DiffConsoleFormatter - escape -

[keradus]

https://github.com/FriendsOfPHP/PHP-CS-Fixer/pull/6183/files#r770714802

Original form, depending on language or analyser, may trigger a warning.

https://www.regular-expressions.info/charclass.html
In most regex flavors, the only special characters or metacharacters inside a character class are the closing bracket ], the backslash , the caret ^, and the hyphen -. The usual metacharacters are normal characters inside a character class, and do not need to be escaped by a backslash

[coveralls]

Coverage remained the same at 93.037% when pulling 23aaa2e on keradus:6183b into 1f4f55a on FriendsOfPHP:master.

[SpacePossum]

Thank you @keradus.