Shortened env.COMMIT_MSG ref

Author: adamlui

.github/workflows/update-root-npm-jsd-shields-weekly.yml

@@ -166,5 +166,5 @@ jobs:
           cd ${{ github.workspace }}/adamlui/js-utils
           git pull # again to sync w/ concurrent workflow updates
           git add .
-          git commit -n -m "${{ env.COMMIT_MSG }}" || true
+          git commit -n -m "$COMMIT_MSG" || true
           git push