Fix compilation under msys2-mingw by including missing header

[mblenczewski]

• the std::as_const function requires the #include <utility> include, which was missing from the ritobin_cli deps library

[moonshadow565]

Thanks! This also seems to be fixed in https://github.com/p-ranav/argparse/commit/95d48506833624e28fa68fdab5cfeeb98b05edff .