Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.85:
- Made multiple updates to allow AArch64 builds of the projects;
- Added External/Gaudi for building Gaudi, and updated all the CMake code to make this possible.
* For further details see: https://gitlab.cern.ch/atlas/atlasexternals/-/merge_requests/699