Release of Gauss v56r4 for Sim10

This release is based on Gauss v56r3 to

deploy the possibility to produce Bc and Xicc at 6.8 TeV, see report by @kreps at Simulation meeting of 25 Apr 2023

and better control of MadGraph to support new development for ALP, see presentation by @acasaisv at Simulation Development meeting of 5 April 2023

For detailed list of all MR refer to milestone.

Note that the following data packages also need to be released

• BcVegPyData
• GenXiccData
• LHAPDFSets
• MadGraphData

cc: @adavis, @kreps