superbuild: fix for `llvm-config` searching

Also brings a new numpy and scipy.

* Ben Boeckel: meson-llvm-config-search (paraview/common-superbuild!671)
* Ben Boeckel: ci-xcode-16.1 (paraview/common-superbuild!673)
* Mathieu Westphal: fixup_licenses (paraview/common-superbuild!674)
* Mathieu Westphal: gpl_install_license_lgpl (paraview/common-superbuild!672)
* Ben Boeckel: gperf-cpp17-support (paraview/common-superbuild!670)
* Ben Boeckel: ci-vcvarsall-fix (paraview/common-superbuild!669)

See: paraview/paraview#22760

superbuild @ cdd05dde

-Subproject commit 6f5e53c074118e2bcb29da021f3d701cc5b61186
+Subproject commit cdd05dde82965ab4ff04a3136ec151990fefa393