Boost upgrade needed in craft

[Michael Reeves]

Kdiff3 has run into a compilation bug in boost-hearders 1.80 on MacOS

std::unary_function and std::binary_function are no longer available in
C++17 and C++20. They can be re-enabled by defining
_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION. They are also marked as
[[deprecated]] in C++11 and later. To disable deprecation warnings you have
to define _LIBCPP_DISABLE_DEPRECATION_WARNINGS. Note that this disables all
deprecation warnings.

This issue is fixed upstream as of 1.84 and possibly earlier. Should I
update this library in cradt.
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