Tag to be used with the main branch of atlas/athena. Update(s) since 2.0.169: - Made sure that FindHDF5.cmake would not affect the behaviour of other modules; - Removed the requirement for the cairo-trace executable in FindCairo.cmake (since it doesn't exist in all versions of Cairo); - Introduced automated unit tests for the AtlasLCG find-modules; - Improved FindROOT.cmake to be compatible with ROOT 6.29+; - Updated AtlasLCG to make it find GoogleTest in a way that's compatible with CMake 3.27+; - Updated COOL and CORAL to versions 3.3.15.