[Fix CI] Pin zig version to 0.13.0

[vickunwu]

No description provided.

[mdecimus]

Thanks! I'll merge now. I had to remove the FDB 7.3 and Docker cosign parts, did you have a chance to test those as well?

[vickunwu]

I've tested the cosign part for both binary and docker image.
However, I don't know if it's fine to call it a pass when one can output the version info only with the libfdb_c.so.

[mdecimus]

Ok, I'll add the cosign parts from https://github.com/stalwartlabs/mail-server/pull/1174/files

[mdecimus]

Hi @vickunwu - the CI job is failing again due to sscache errors on all targets:

 #32 0.163 sccache: error: Server startup failed: cache storage failed to read: Unexpected (permanent) at read => {"$id":"1","innerException":null,"message":"This legacy service is shutting down, effective April 15, 2025. Migrate to the new service ASAP. For more information: https://gh.io/gha-cache-sunset","typeName":"Microsoft.Azure.DevOps.ArtifactCache.WebApi.ArtifactCacheServiceDecommissionedException, Microsoft.Azure.DevOps.ArtifactCache.WebApi","typeKey":"ArtifactCacheServiceDecommissionedException","errorCode":0,"eventId":3000}

and also FoundationDB errors on the Apple targets:

 installer: Error - the package path specified was invalid: 'foundationdb.pkg'.

Do you think you can look into this? Thanks!