[TASK] Align formatting details in runTests.sh

Some rather minor script modifications in runTests.sh
to prepare #97566

Resolves: #101389
Related: #97566
Releases: main, 12.4, 11.5
Change-Id: I35e2acd7848f5b49c2a1359d2e976cb553d72ac0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/80095


Reviewed-by: Stefan B�rk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Stefan B�rk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>