workflows/release-binaries: Use static ZSTD on macOS

On macOS the shared zstd library points to a homebrew install that isn't
very stable for users.

Author: keith

.github/workflows/release-binaries.yml

@@ -126,7 +126,7 @@ jobs:
         # add extra CMake args to disable them.
         # See https://github.com/llvm/llvm-project/issues/99767
         if [ "${{ runner.os }}" = "macOS" ]; then
-          target_cmake_flags="$target_cmake_flags -DBOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF"
+          target_cmake_flags="$target_cmake_flags -DBOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF -DLLVM_USE_STATIC_ZSTD=ON"
           if [ "${{ runner.arch }}" = "ARM64" ]; then
             arches=arm64
           else