Fix var

.github/workflows/pin-for-pyoxidizer.yml

@@ -49,7 +49,7 @@ jobs:
           git config user.email [email protected]
           git add .
           git commit -m "Automated dependency upgrades for $RUNS_ON"
-          git push -f origin $REF_NAME:$BRANCH_NAME
+          git push -f origin ${REF_NAME}:${BRANCH_NAME}
 
       - name: Open pull request if needed
         if: steps.changes.outputs.count > 0