Clone codeql to make stubs available for tests

Author: Alvaro Muñoz

.github/workflows/build.yml

@@ -42,6 +42,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ github.token }}
         run: |
+          gh repo clone github/codeql # to make stubs available for tests
           codeql pack download "codeql/${{ matrix.language }}-queries"
           codeql pack install "${{ matrix.language }}/lib"
           codeql pack install "${{ matrix.language }}/src"