Pin actions/checkout's own workflows to a known, good, stable version. (#1776)

* Pin actions/checkout's own workflows to a known, good, stable version.

* fixed failing unit test

* fix unit test

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v4.1.6
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3