terraform-providers: disable CGO, set ldflags

these are the defaults for publishing on the terraform registry

pkgs/applications/networking/cluster/terraform-providers/default.nix

···
       inherit (data) vendorSha256 version;
       subPackages = [ "." ];
       doCheck = false;
+      # https://github.com/hashicorp/terraform-provider-scaffolding/blob/a8ac8375a7082befe55b71c8cbb048493dd220c2/.goreleaser.yml
+      # goreleaser (used for builds distributed via terraform registry) requires that CGO is disabled
+      CGO_ENABLED = 0;
+      ldflags = [ "-s" "-w" "-X main.version=${data.version}" "-X main.commit=${data.rev}" ];
       src = fetchFromGitHub {
         inherit (data) owner repo rev sha256;
       };