Fix create release branch script

Author: stephen-carter-at-sf

.github/workflows/create-release-branch.yml

@@ -145,7 +145,7 @@ jobs:
           git checkout -b release-$NEW_VERSION
           git push --set-upstream origin release-$NEW_VERSION
           # Now that we're done with the interim branch, delete it.
-          git push -d ${NEW_VERSION}-interim
+          git push -d origin ${NEW_VERSION}-interim
           # Output the release branch name so we can use it in later jobs.
           echo "branch_name=release-$NEW_VERSION" >> "$GITHUB_OUTPUT"
   # Run all the various tests against the newly created branch.