Update photon fudge factor tune
Move to new photon fudge factors (tune 23) determined with full Run2 See https://its.cern.ch/jira/projects/ATLEGAMDPD/issues/ATLEGAMDPD-167
Move to new photon fudge factors (tune 23) determined with full Run2 See https://its.cern.ch/jira/projects/ATLEGAMDPD/issues/ATLEGAMDPD-167