Potential fix for pull request finding 'CodeQL / Workflow does not contain permissions'

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: Crash0v3rrid3

.github/workflows/verify-selfupdate-checksums.yml

@@ -17,6 +17,9 @@ on:
       - 'scripts/**'
       - '.github/workflows/verify-selfupdate-checksums.yml'
 
+permissions:
+  contents: read
+
 jobs:
   verify-sidecars:
     runs-on: ubuntu-latest