build on macos

Author: cenkalti

.github/workflows/build.yml

@@ -42,7 +42,7 @@ jobs:
   goreleaser:
     name: Build and release binary
     needs: test
-    runs-on: ubuntu-latest
+    runs-on: macos-latest
     if: startsWith(github.ref, 'refs/tags/v')
     steps:
       - uses: actions/checkout@v2