GitHub macOS bindist - Attempt 9

git-svn-id: https://svn.code.sf.net/p/vice-emu/code/trunk@45832 379a1393-f5fb-40a0-bcee-ef074d9b53f7

Author: dqh-au

.github/workflows/build-main-on-push.yml

@@ -526,7 +526,7 @@ jobs:
   build_mac:
     name: Build macOS Binaries
     env:
-      SHARED_DEPS: "autoconf automake pkg-config xa lame dos2unix libpng libvorbis flac"
+      SHARED_DEPS: "autoconf automake pkg-config xa lame dos2unix giflib libpng libvorbis flac"
     needs: [create_release, build_doc]
     strategy:
       fail-fast: false