[TASK] Update require-dev packages to newest versions

Updates the following libraries:

phpunit/phpunit 5.4.8
friendsofphp/php-cs-fixer 1.11.6
codeception/codeception 2.2.3

Resolves: #77288
Releases: master
Change-Id: I9bc3af4ee74984138a58633abb2c17c14a4e7d62
Reviewed-on: https://review.typo3.org/49242


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>