[13_0_X] Bump cepgen to 1.2.1patch1#9041

Merged

smuzaffar merged 2 commits intocms-sw:IB/CMSSW_13_0_X/masterfrom

forthommel:cepgen-13_0_X

Mar 11, 2024

Commits on Feb 29, 2024

Bumped cepgen to 1.2.1, and adapted dependencies
forthommel
committed

Commits on Mar 1, 2024

Bumped to patch version
forthommel
committed