[TASK] Update codeception to 2.4.0

composer update codeception/codeception --with-dependencies

This comes with a bunch of dependencies also updated, most
important probably: phpunit/phpunit 6.5.0.

Change-Id: I324c1cfab90d22477d2771f0aa747eae39a66743
Resolves: #84445
Releases: master
Reviewed-on: https://review.typo3.org/56303


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>