[TASK] Remove docker-compose v1 enforce check from runTests.sh

Quite some issues with docker-compose v2 have been fixed
We'll now try to use it again and remove a v1 restriction
in `Build/Scripts/runTests.sh`.

Resolves: #98086
Releases: main, 11.5, 10.4
Change-Id: I7e4ff82df374db33ba42db0e0d1483f6320ba9ea
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75374


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: André Buchmann <andy.schliesser@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: André Buchmann <andy.schliesser@gmail.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>