Change LCG default version from 105c to 106c

This requires:

• lhcb/Detector!674 (merged)
• lhcb/LHCb!4702 (merged)
• lhcb/LHCb!4885 (merged)
• lhcb/LHCb!4900 (merged)
• lhcb/Run2Support!66 (merged)
• lhcb/Rec!4226 (merged)
• lhcb/Rec!4257 (merged)
• lhcb/Allen!1862 (merged)
• lhcb/Moore!4240 (merged)
• lhcb/Moore!4293 (merged)
• lhcb/Moore!4305 (merged)
• lhcb/DaVinci!1160 (merged)
• lhcb/DaVinci!1223 (merged)
• lhcb/LHCbIntegrationTests!97 (merged)
• lhcb/Gauss!1140
• Gaussino/gaussinoextlibs!22 (merged)
• Gaussino/Gaussino!179
• Gaussino/Gaussino!184 (merged)

/cc @msaur @gcorti @jonrob @sponce

added 1 commit

• 19cd09d7 - Fix LHCb project branch for LCG 105c compatibility in sim11

Compare with previous version

assigned to @msaur

Merge requests remaining to be merged:

• lhcb/Gauss!1140
• Gaussino/gaussinoextlibs!22 (merged)
• Gaussino/Gaussino!179

@gcorti will take care of them in following days, so I am removing them from the list of dependencies and merging this MR.

mentioned in commit 64813880

merged