Tag to be used with the main branch of atlas/athena. Update(s) since 2.1.16: - Added prmon to AthGenerationExternals; - Made AtlasCMake's install commands more rigorous about missing files; - Updated CheckerGccPlugins: Added support for GCC 14 and LTO; - Updated prmon to version 3.1.0; - Added Findflake8_bugbear.cmake and Findflake8_builtins.cmake to AtlasLCG; - Added CheckerGccPlugins to AthSimulationExternals; - Updated CORAL and COOL to version(s) 3.3.17.