Update Boost version to use Filesystem v4

[dimitre]

I've tried to update boost to latest (v1.81.0) but I think maybe some .a changed names in the meantime error

cp: stage/lib/libboost_system.a: No such file or directory

With this change we can use boost filesystem v4 which is much more similar to std::filesystem

Today for example of::filesystem::canonical throws error when using boost library and the file doesn't exist. so when using try / catch we are dealing with unexpected behavior, because sometimes we have to solve canonical paths for non existent files, example: if we are creating a directory.