Update the Geant4 version to 10.6.3.6
This MR updates the Geant4 version to 10.6.3.6. This is needed in order to make the Woodcock tracking more robust, and it should fix some rare crashes seen in pre-production jobs.
This MR updates the Geant4 version to 10.6.3.6. This is needed in order to make the Woodcock tracking more robust, and it should fix some rare crashes seen in pre-production jobs.