Update codeql-analysis.yml with defaults

adds default permissions to Codeql workflow.

Author: reactive-firewall

.github/workflows/codeql-analysis.yml

@@ -20,6 +20,8 @@ on:
   schedule:
     - cron: '17 5 * * 1'
 
+permissions: {}
+
 jobs:
   analyze:
     name: Analyze