Tag to be used with the master branch of atlas/athena. Update(s) since 2.0.78: - Updated FindSYCL.cmake for better compatibility with the latest oneAPI versions; - Updated FindUUID.cmake to set up a correct RPM dependency in case the LCG release provides this package; - Updated the build of HDF5 to work correctly using Xcode 12.0 on macOS; - Updated the build of ROOT to be more robust in using the Python version built as part of the same project as it is.