[Github Actions] Do not install libffi

Author: buffer

.github/workflows/osx.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install dependencies
         run: |
           brew reinstall git autoconf libtool
-          brew install automake graphviz tesseract libmagic pango libffi
+          brew install automake graphviz tesseract libmagic pango
           ln -s $(which glibtoolize) /usr/local/bin/libtoolize
           ln -s /opt/homebrew/opt/glib/lib/libgobject-2.0.0.dylib /usr/local/lib/gobject-2.0
           ln -s /opt/homebrew/opt/pango/lib/libpango-1.0.dylib /usr/local/lib/pango-1.0