Brings a composer conflict setting to prevent incompatible
doctrine/dbal versions, and an acceptance test related fix.

composer req --dev typo3/testing-framework:^6.8.3
composer req --dev typo3/testing-framework:^6.8.3 -d typo3/sysext/core --no-update

Resolves: #94332
Releases: master, 10.4
Change-Id: Ib1192c5135c02d485c8f28b54755c22a1a50c10f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69481


Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>