ci: change tar command on macOS runners

[williamboman]

There seems to be some weird behaviour going on when creating compressed
tarballs with bsdtar this way (redirecting stdout). The produced files
seems OK, but gzip itself struggles to decompress it without errors,
resulting in a "trailing garbage ignored" error message and exit code 2
(it still decompresses the file just fine though). This error doesn't
surface when decompressing using bsdtar directly, but it does when
using gnutar.

See mason-org/mason-registry#9775.

If you have a Mac you should be able to reproduce this assuming tar -> bsdtar and that you have gnutar installed as gtar.

 $ echo Hello > file
 $ tar -cvz file > archive.tar.gz
 $ gzip -d -c archive.tar.gz > /dev/null
 # exit code 2 and gzip: archive.tar.gz: trailing garbage ignored

 # Method 1: Create tarball first and then gzip
 $ tar -cv file > archive.tar
 $ gzip archive.tar
 $ gzip -d -c archive.tar.gz > /dev/null
 # works fine!

 # Method 2: Create compressed tarball with the -f flag
 $ tar -czf archive.tar.gz file
 $ gzip -d -c archive.tar.gz > /dev/null
 # works fine!

I figured I'd open a PR since I found this somewhat interesting and
spent some time debugging it. Not entirely sure I've even found the root
cause but I believe this should help.

On my system this is the hexdump difference: https://www.diffchecker.com/z7Xqcfu8/. Right side is redirecting stdout, left side is using -f.

[tjex]

Really appreciate this! Very considerate and out of the blue :)

Will also take the opportunity to extend a big thank you for Mason 🙏

[williamboman]

Thanks! Would it be possible to get a new patch release with new assets? There's some problems installing zk on Mac at the moment via Mason

[tjex]

Done: https://github.com/zk-org/zk/releases/tag/v0.15.1