.github: Add building binaries to check workflow (#4545)

Add `build_release_artifacts` script to `build` workflow. We don't check if
binaries are successfully built before release action. But it's possible that
something can be broken, i.e. the windows build was broken during the last
Horizon release. It's better to ensure everything is working in every PR.

.github/workflows/go.yml

@@ -49,6 +49,8 @@ jobs:
  with:
  go-version: ${{ matrix.go }}
  - run: go build ./...
+ - name: Build binaries
+ run: go run ./support/scripts/build_release_artifacts/main.go
 
  test:
  strategy: