python313Packages.scipy: use external system libraries as dependencies (#422321)

pkgs/development/python-modules/scipy/default.nix

···
   pybind11,
   pooch,
   xsimd,
+  boost188,
+  qhull,
 
   # dependencies
   numpy,
···
     pybind11
     pooch
     xsimd
+    boost188
+    qhull
   ];
 
   dependencies = [ numpy ];
···
     # meson the proper cross compilation related arguments. See also:
     # https://docs.scipy.org/doc/scipy/building/cross_compilation.html
     "--cross-file=${crossFileScipy}"
+    "-Duse-system-libraries=all"
   ];
 
   # disable stackprotector on aarch64-darwin for now