Add step to display Copilot config.json contents

Author: austenstone

.github/actions/copilot/action.yml

@@ -47,6 +47,8 @@ runs:
       env:
         GITHUB_STEP_SUMMARY: ${{ github.step_summary }}
       shell: bash
+    - run: |
+        cat $XDG_CONFIG_HOME/.copilot/config.json
     - run: copilot -p "$PROMPT" --allow-all-tools --log-level all --log-dir ~/.copilot/logs --save-trajectory-output ~/.copilot/trajectory.md
       id: copilot
       env: