✅ Fix PHPUnit warning
✅ Fix PHPUnit warning

Warning - The configuration file did not pass validation!
  The following problems have been detected:

  Line 24:
  - Element 'log', attribute 'charset': The attribute 'charset' is not allowed.
  - Element 'log', attribute 'yui': The attribute 'yui' is not allowed.
  - Element 'log', attribute 'highlight': The attribute 'highlight' is not allowed.

  Test results may not be as expected.

hansott/psr7-cookies