Use releasebot token for PR creation in regenerate-cli-help-messages (#1021)

Author: lbarcziova

.github/workflows/regenerate-cli-help-messages.yml

@@ -36,3 +36,4 @@ jobs:
           title: "Update help messages of CLI commands"
           body: "Automatically regenerated help messages for CLI command docs."
           delete-branch: true
+          token: ${{ secrets.RELEASEBOT_GITHUB_TOKEN }}