[BUGFIX] Run integration docblock tests for security builds on correct branch

Resolves: #89791
Releases: master
Change-Id: I9716c810035886dd3c1a5579b6b2e33ac38f585e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62445


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Susanne Moog <look@susi.dev>