Fix workflow for auto-publish

Follow up on previous commit 4542b40

Author: cderv

.github/workflows/update-downloads.yml

@@ -43,5 +43,5 @@ jobs:
     if: ${{ needs.update-downloads.outputs.changes_detected == 'true' }}
     uses: ./.github/workflows/publish.yml
     with:
-      ref: ${{ needs.update-downloads.outputs.commit == 'true' }}
+      ref: ${{ needs.update-downloads.outputs.commit }}
     secrets: inherit