Try to fix hanging CodeQL CI job

The CodeQL CI job has mysteriously started hanging in the "autobuild" step, without any indication that anything has gone wrong.

I have no idea why, but let's try using a manual build to see if that fixes things.

Author: tcbrindle

.github/workflows/codeql-analysis.yml

@@ -55,8 +55,8 @@ jobs:
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v3
+    # - name: Autobuild
+    #  uses: github/codeql-action/autobuild@v3
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -67,13 +67,12 @@ jobs:
     # - run: |
     #   echo "Run, Build Application using script"
     #   ./location_of_script_within_repo/buildscript.sh
-    #- run: |
-    #    ${{matrix.install}}
-    #    cmake -E make_directory ${{runner.workspace}}/build
-    #    cd ${{runner.workspace}}/build
-    #    cmake ${GITHUB_WORKSPACE} -GNinja -DCMAKE_CXX_COMPILER=g++-13
-    #    cmake --build .
-      
+    - name: Build
+      run: |
+        cmake -E make_directory ${{runner.workspace}}/build
+        cd ${{runner.workspace}}/build
+        cmake ${GITHUB_WORKSPACE} -DFLUX_BUILD_EXAMPLES=Off
+        cmake --build . -j 4
 
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@v3