[TASK] Avoid invalid methods in DependencyUtilityTest

Method getLowestAndHighestIntegerVersions() does not
exist and should not be mocked.

Resolves: #100418
Related: #100249
Releases: main
Change-Id: I12226e350077d10149a491270e651b61f5d820e4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78389


Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>