Automate blacklist updater / changes

.github/workflows/bl.yml

@@ -47,8 +47,10 @@ jobs:
           git config --global user.name "${{ env.REPO_OWNER }}"
           git config --global user.email "${{ env.REPO_OWNER }}@github.com"
           git add blacklist*txt
-          git diff --staged --exit-code || echo "No changes to commit"
-          if [ $? -ne 0 ]; then
+          git diff --staged --quiet || CHANGED=true
+          if [ "$CHANGED" = true ]; then
               git commit -m "Update $timestamp"
               git push https://${{ env.GH_PAT }}@github.com/${{ env.REPO_OWNER }}/${{ env.REPO_NAME }}.git
+          else
+              echo "No changes to commit"
           fi