Fix macOS CI dependency installation

Author: serjective

scripts/ci/install_macos_build_deps.sh

@@ -12,19 +12,22 @@ export PATH="${brew_prefix}/bin:${PATH}"
 
 packages=(
     bison
+    ffmpeg
     flex
     glib
+    libass
+    libplacebo
     llvm@18
     meson
     ninja
     orc
     pkg-config
+    z3
+    zstd
 )
 
 for package in "${packages[@]}"; do
     if ! brew list --versions "${package}" >/dev/null 2>&1; then
         brew install "${package}"
     fi
 done
-
-python3 -m pip install --user --disable-pip-version-check jinja2