Pin to last working version of go-releaser (#183)

It looks like releases are not working any more with the newer version
of go-releaser. Before debugging why I thought it might be helpful to
get to a working state again by going back to the version that still
worked on the last release.

.github/workflows/release.yml

@@ -52,5 +52,5 @@ jobs:
           VERSION: ${{ steps.get_version.outputs.VERSION }}
           BUILD_DATE: ${{ steps.get_build_date.outputs.BUILD_DATE }}
         with:
-          version: latest
+          version: v1.18.2
           args: release --rm-dist