Synchronize master branch with lcg-105-compat

Includes:

• remove CaloCellID dependency in StandardPacker (!5073 (merged))
• Cherry pick !5093 (merged) (Remove assert() in FT Eecoder) to lcg-105-compat (!5094 (merged))
• Cherry pick !5089 (merged) (Remove assert() in FT Eecoder) to lcg-105-compat (!5090 (merged))
• Prepare LHCb release v56r6 (!5027 (merged))
• Cherry pick !5016 (merged) (Fix the upper bound of a beetle loop in DeUTSector.h for DetDesc) to lcg-105-compat (!5029 (merged))

Goes with Detector!752 (merged)