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Antoine Pitrou authored and GitHub committed 7ecec6c871d
GH-36452: [CI][C++] Test C++20 support with compatible compiler (#36454) We were testing C++20 compatibility on a gcc version that only accepts `-std=c++2a`, not `-std=c++20`. Switch to a newer Ubuntu, and therefore gcc, version. * Closes: #36452 Authored-by: Antoine Pitrou <antoine@python.org> Signed-off-by: Antoine Pitrou <antoine@python.org>