contains the following MR: Pythia8_FxFx_A14mod fragment https://gitlab.cern.ch/atlas/athena/-/merge_requests/40120 add missing comma to FxFx_A14 fragment https://gitlab.cern.ch/atlas/athena/-/merge_requests/40182 more complex Sherpa ART tests https://gitlab.cern.ch/atlas/athena/-/merge_requests/40287 updated MultiPartonFilter https://gitlab.cern.ch/atlas/athena/-/merge_requests/40299 SystematicsTool update https://gitlab.cern.ch/atlas/athena/-/merge_requests/40326 Update README.md with OTF trick, update release https://gitlab.cern.ch/atlas/athena/-/merge_requests/40344 update to Epos 1.6 https://gitlab.cern.ch/atlas/athena/-/merge_requests/40372