science/geant4: Update to 11.1.2

ChangeLog: https://geant4.web.cern.ch/download/release-notes/notes-v11.1.2.txt

PR: 272574
Reported by: erik@tenku.dk (maintainer)
MFH: 2023Q3 (bugfix release)

(cherry picked from commit 51740cdf2997be81d5ea31f98dbba331112401ed)