fix: use authenticated requests to the github api in order to generate changelogs for a release

.github/workflows/release.yml

@@ -57,6 +57,9 @@ jobs:
           git config --global user.email no-reply@dokku.com
 
       - name: build package
+        env:
+          RELEASE_GITHUB_USERNAME: ${{ secrets.HOMEBREW_GITHUB_USERNAME }}
+          RELEASE_GITHUB_API_TOKEN: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}
         run: contrib/release-dokku ${{ github.event.inputs.release_type }}
 
       - name: output version