Change default raw_event_format to 0.5

The only difference between 0.3 and 0.5 event formats is the addition of some retina cluster locations. raw_event_format=0.5 should now be the default

This was found as it was causing a shadowing warning in DV

/cvmfs/lhcbdev.cern.ch/nightlies/lhcb-master/latest/LHCb_v53r9/InstallArea/x86_64_v3-centos7-gcc11-opt+g/python/GaudiConf/reading.py:120: UserWarning: multiple matches: higher-level 0.5 (<enable debugging to get file:line>) shadows 0.3 (<enable debugging to get file:line>)
  bank_location = default_raw_event(["DstData"],

goes with DaVinci!730 (merged)