Add top level permission for GH actions

.github/workflows/codeql.yml

@@ -18,6 +18,9 @@ on:
     # The branches below must be a subset of the branches above
     branches: [ "main" ]
 
+permissions:
+  contents: read
+
 jobs:
   analyze:
     if: "!contains(github.event.commits[0].message, '[noci]')"

.github/workflows/container.yml

@@ -7,6 +7,9 @@ on:
     branches:
       - "main"
 
+permissions:
+  contents: read
+
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}

.github/workflows/secret_scan.yml

@@ -3,6 +3,10 @@ on:
   pull_request:
     branches:
       - main
+
+permissions:
+  contents: read
+
 jobs:
   trufflehog:
     runs-on: ubuntu-latest