[clang] [llvm] workflows/release-binaries: Use static ZSTD on macOS (PR #109909)

[Keith Smiley via cfe-commits]

keith wrote:

I downloaded the binaries from this stage again:

<img width="305" alt="image" src="https://github.com/user-attachments/assets/bb37ccaa-5f5f-4c99-8491-0ec570cb0a69">

and it looks like this change didn't apply to either of these binaries `build/bin/clang build/tools/clang/stage2-bins/bin/clang`. If it had passed would it have applied to stage 3 only? testing that now

https://github.com/llvm/llvm-project/pull/109909