Fix path issues in codeql report

Author: greenc-FNAL

.github/workflows/codeql-analysis.yaml

@@ -1,4 +1,4 @@
-name: "CodeQL - Analyze (C++/CMake + Python)"
+name: "CodeQL - Analyze (C++, Python, Actions)"
 
 on:
   push:
@@ -19,7 +19,7 @@ env:
 
 jobs:
   codeql:
-    name: Analyze with CodeQL (C++, Python)
+    name: Analyze with CodeQL
     runs-on: ubuntu-24.04
     container:
       image: ghcr.io/framework-r-d/phlex-ci:latest
@@ -41,6 +41,7 @@ jobs:
         with:
           languages: cpp, python, actions
           config-file: phlex-src/.github/codeql/codeql-config.yml
+          source-root: phlex-src
           build-mode: none
 
       - name: Configure CMake