Update CodeQL workflow to improve submodule handling

Removed the debugging file listing step and added an explicit step to initialize and update submodules using git. This ensures submodules are properly set up before running CodeQL analysis.

Author: jupster

.github/workflows/codeql-analysis.yml

@@ -30,16 +30,15 @@ jobs:
         language: [ 'csharp' ]
 
     steps:
-    - name: List files for debugging
-      run: |
-        ls -R
-
     - name: Checkout repository
       uses: actions/checkout@v4
       with:
         submodules: recursive
         token: ${{ secrets.GITHUB_TOKEN }}
 
+    - name: Init & update submodules
+      run: git submodule update --init --recursive
+
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3
       with: