Update file(s) from wp-cli/.github

Author: swissspidy

.github/workflows/copilot-setup-steps.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check existence of composer.json file
         id: check_composer_file