add extra step to remove commit message

Author: JenabaBa

.github/workflows/update-dependencies.yml

@@ -37,4 +37,7 @@ jobs:
           commit-message: ${{ env.TITLE }}
           body: ${{ env.DESC }}
           branch: run-dependency-updater
-          delete-branch: true
+          delete-branch: true
+
+      - name: remove commit message .env
+        run: rm -rf commit_message.env