GCC 15.1.1 errors when using C++23 #293

In file included from build/_deps/toml11-src/include/toml11/impl/literal_impl.hpp:4,
                 from build/_deps/toml11-src/src/literal.cpp:1:
build/_deps/toml11-src/include/toml11/impl/../fwd/literal_fwd.hpp:22:25: error: space between quotes and suffix is deprecated in C++23 [-Werror=deprecated-literal-operator]
   22 | ::toml::value operator"" _toml(const char* str, std::size_t len);