Switch GEANT4 branch from 10.5 to recent reference tag 10.5ref03 about geant4

[cmsbuild]

A new Issue was created by @civanch Vladimir Ivantchenko.

@davidlange6, @Dr15Jones, @smuzaffar, @fabiocos, @kpedro88 can you please review it and eventually sign/assign? Thanks.

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[fabiocos]

@civanch this is of course meant for 11_0_X, not for UL reprocessing, right?

[smuzaffar]

@civanch , I can not access https://gitlab.cern.ch/geant4/geant4-dev repository. Can you please make a tar file.
@fabiocos , for now we are only going to add this in special GEANT4 IBs.

[civanch]

@fabiocos , this is even may be after 11_0 - it is a rolling validation of Geant4 developments.

[civanch]

@smuzaffar , please, try out : https://cernbox.cern.ch/index.php/s/d86g9lrqpbR1kOD

[smuzaffar]

thanks @mrodozov for cms-sw/cmsdist#4861