6.6.1 for master & v10
4.15.3 for v9

Brings a bugfix to make the test splitter deterministic.

composer req --dev typo3/testing-framework:^4.15.3

Change-Id: Iec61eb2d6a62a0c344c712d0577aa82adf04e7f5
Resolves: #93485
Releases: master, 10.4, 9.5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/67686


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>