Add newline at the end of the copilot-test-tools.yml file

Author: austenstone

.github/workflows/copilot-test-tools.yml

@@ -33,4 +33,5 @@ jobs:
           PROMPT: |
             list all your tools.
       - run: |
-          cat ~/.copilot/mcp-config.json
+          cat ~/.copilot/mcp-config.json
+