[StepSecurity] ci: Harden GitHub Actions in codeql-analysis.yml (#89)

Author: step-security-bot

.github/workflows/codeql-analysis.yml

@@ -14,8 +14,15 @@ on:
     # The branches below must be a subset of the branches above
     branches: [ master ]
 
+permissions:  # added using https://github.com/step-security/secure-workflows
+  contents: read
+
 jobs:
   analyze:
+    permissions:
+      actions: read  # for github/codeql-action/init to get workflow details
+      contents: read  # for actions/checkout to fetch code
+      security-events: write  # for github/codeql-action/autobuild to send a status report
     name: Analyze
     runs-on: ubuntu-latest