Add binary name to goreleaser build configs

Without this name, it assumes all binaries share the name of the project
(i.e. lotus), which causes them all to get renamed and collide when
generating the archive.

.goreleaser.yaml

@@ -13,6 +13,7 @@ universal_binaries:
 
 builds:
   - id: lotus
+    binary: lotus
     builder: prebuilt
     goos:
       - darwin
@@ -28,6 +29,7 @@ builds:
     prebuilt:
       path: /tmp/workspace/{{ .Os }}_{{ .Arch }}{{ with .Amd64 }}_{{ . }}{{ end }}/lotus
   - id: lotus-miner
+    binary: lotus-miner
     builder: prebuilt
     goos:
       - darwin
@@ -43,6 +45,7 @@ builds:
     prebuilt:
       path: /tmp/workspace/{{ .Os }}_{{ .Arch }}{{ with .Amd64 }}_{{ . }}{{ end }}/lotus-miner
   - id: lotus-worker
+    binary: lotus-worker
     builder: prebuilt
     goos:
       - darwin