.goreleaser.yml: Handle Darwin and Linux respectively

Author: brancz

.goreleaser.yml

@@ -26,7 +26,7 @@ archives:
       {{- trimprefix .Version "v" }}_
       {{- title .Os }}_
       {{- if eq .Arch "amd64" }}x86_64
-      {{- else if eq .Arch "arm64" }}aarch64
+      {{- else if eq .Arch "arm64" }}{{ if eq .Os "darwin" }}arm64{{ else }}aarch64{{ end }}
       {{- else }}{{ .Arch }}{{ end }}
     format: binary
     format_overrides: