CI fix. * jk/ci-macos-gcc13-fix: ci: stop installing "gcc-13" for osx-gcc ci: avoid bare "gcc" for osx-gcc job ci: drop mention of BREW_INSTALL_PACKAGES variable
CI fix. * jk/ci-macos-gcc13-fix: ci: stop installing "gcc-13" for osx-gcc ci: avoid bare "gcc" for osx-gcc job ci: drop mention of BREW_INSTALL_PACKAGES variable