Add Harfbuzz dependency

* admin/nt/dist-build/build-dep-zips.py: Add harfbuzz as a dependency.

Author: phillord

admin/nt/dist-build/build-dep-zips.py

@@ -31,6 +31,7 @@
 # This list derives from the features we want Emacs to compile with.
 PKG_REQ='''mingw-w64-x86_64-giflib
 mingw-w64-x86_64-gnutls
+mingw-w64-x86_64-harfbuzz
 mingw-w64-x86_64-lcms2
 mingw-w64-x86_64-libjpeg-turbo
 mingw-w64-x86_64-libpng