Tag to be used with the master branch of atlas/athena. Update(s) since 2.0.148: - Upgraded PyModules and flake8_atlas to flake8 6.0.0; - Updated the TBB and PyAnalysis builds to work correctly with Clang (on macOS); - Upgraded Geant4 to version 10.6.3.6; - Upgraded the versions of Acts, CLHEP, Davix, Gaudi and GeoModel to the ones used already through build_externals.sh overrides.