deps: use Go standard errors

[mmorel-35]

github.com/pkg/errors is deprecated and shall be replaced. As only errors.New method is actually used here this is a very easy replacement.

Target Release

1.5.x

Draft CHANGELOG entry

ENHANCEMENTS

• use Go standard errors instead of github.com/pkg/errors

[crw]

Thanks for this submission, I've included it for triage.

[apparentlymart]

Thanks @mmorel-35!

I've labeled this for the attention of the OSS backend maintainers, since that backend is maintained by a different group then much of the rest of this codebase.

It's unfortunate that apparently at least one of our dependencies also depends on this, and so the module will still end up compiled into Terraform CLI releases regardless. But at least hopefully one day it'll be gone, once the rest of the ecosystem moves away from this deprecated module.

[apparentlymart]

Hi again @mmorel-35!

Recently I've been working on some general external dependency cleanup and consolidation, and so I ended up doing the same thing you did here as part of #34794. I must admit that I'd forgotten about this PR at the time I was working on that, but I made essentially the same change you proposed here, while also additionally removing HashiCorp's own now-redundant go-multierror module.

In the process of investigating that I also learned that it's the Consul SDK that still depends on this old module (although it might not be the only example in our dependency graph) and so the Consul team will need to migrate to the stdlib errors and we'll need to upgrade the SDK before it'll be gone from our go.mod files altogether.

Thanks for working on this!

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