Add explicit permissions to copilot-setup-steps workflow

Co-authored-by: 0xrinegade <[email protected]>

Author: Copilot

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

@@ -9,6 +9,8 @@ on:
 jobs:
   setup:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
 
     steps:
       - name: Checkout repository