Update action versions to pinned hash in copilot-setup-steps.yml

Signed-off-by: Zack Koppert <zkoppert@github.com>

Author: zkoppert

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

@@ -26,12 +26,12 @@ jobs:
     # If you do not check out your code, Copilot will do this for you.
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6.0.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@v6.2.0
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: 3.12