ci: Update to Fedora 39
Fedora 39 comes with LLVM/Clang 17, with which we can use C++ modules with compiler extensions enabled.
See !8502 (merged) for the update to Fedora 38.
Backport: release:HEAD^2
Edited by Brad King
Fedora 39 comes with LLVM/Clang 17, with which we can use C++ modules with compiler extensions enabled.
See !8502 (merged) for the update to Fedora 38.
Backport: release:HEAD^2