Update .github/workflows/tox.yml

Author: Cadair

.github/workflows/tox.yml

@@ -242,7 +242,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: .coverage.${{ github.sha }}-${{ runner.os }}-${{ runner.arch }}-${{ matrix.toxenv }}
-          path: **/.coverage
+          path: "**/.coverage"
 
   report_overall_test_coverage:
     needs: [ tox ]