contains MR: MadGraphControl patch for decays https://gitlab.cern.ch/atlas/athena/-/merge_requests/42201 MadGraphControl PMG settings override for SUSY https://gitlab.cern.ch/atlas/athena/-/merge_requests/42202 add ART tests for Powheg https://gitlab.cern.ch/atlas/athena/-/merge_requests/42216 21.6 add prophecy4f and hto4l https://gitlab.cern.ch/atlas/athena/-/merge_requests/42273 add the LHE filters into share/common so that they are visible on the JOs level https://gitlab.cern.ch/atlas/athena/-/merge_requests/42302 correct merge_lhe_file_location https://gitlab.cern.ch/atlas/athena/-/merge_requests/42349 change Superchic path https://gitlab.cern.ch/atlas/athena/-/merge_requests/42371 21.6, PowhegControl: two fixes (lhe comments and gridpack handling) https://gitlab.cern.ch/atlas/athena/-/merge_requests/42404