[TASK] Update typo3/testing-framework to 6.3.3

composer require --dev typo3/testing-framework ^6.3.3

Mostly brings a bugfix of the functional test splitter,
relevant for bamboo but relevant and v10, and a
deprecation removal preparation for master.

Change-Id: I0de875483ba0997f91071242b4d4aa5f9c1398e6
Resolves: #91926
Releases: master, 10.4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/65179


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>