contains MRs:

https://gitlab.cern.ch/atlas/athena/-/merge_requests/60093 Generators: set correct units in Herwig7 interface 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/60066 MadGraph PDFs for Run3 update 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/57430 CA-based ParticleGun configuration