Add explicit permissions block to workflow for security

Co-authored-by: lippytm <65956507+lippytm@users.noreply.github.com>

Author: Copilot

.github/workflows/integrations.yml

@@ -8,6 +8,8 @@ on:
 jobs:
   integration-checks:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
 
     steps:
       - name: Checkout code