[CI] Build for macOS ARM64

[iamazeem]

• Build AMD64 on macos-12
• Build ARM64 on macos-14
• Update homebrew tap only under macos-12

Fixes #158.

Signed-off-by: Azeem Sajid azeem.sajid@gmail.com

[iamazeem]

@liquidaty: macOS ARM64 build is ready. Please download it from https://github.com/liquidaty/zsv/actions/runs/8325897159 and test it on your side.

I have checked with file command on my side and it looks good:

$ file zsv-0.0.0-arm64-macosx-gcc/bin/zsv
zsv-0.0.0-arm64-macosx-gcc/bin/zsv: Mach-O 64-bit arm64 executable, flags:<NOUNDEFS|DYLDLINK|TWOLEVEL|WEAK_DEFINES|BINDS_TO_WEAK|PIE>

I don't have a macOS ARM64 machine to test it fully on my side except the GHA hosted runners.

---

NOTE: Please do not merge this PR yet. I have disabled other builds for quick iterations. Need to enable those first before merging. Thanks!