fix report

Author: RobinL

.github/workflows/pythonpackage.yml

@@ -32,9 +32,10 @@ jobs:
       run: |
         pip install coverage
         coverage run -m unittest discover
+        coverage xml -o codecov_report.xml
     - uses: codecov/codecov-action@v1.0.2
       with:
         token: ${{secrets.CODECOV_TOKEN}} #required
-        file: ./.coverage #optional
+        file: ./codecov_report.xml #optional
         flags: unittests #optional
         name: codecov-umbrella #optional