Upload coverage from GHA (#480)

* Upload coverage from GHA

* Fix PytestConfigWarning: Unknown config option: python_paths

.github/workflows/test.yml

@@ -46,3 +46,8 @@ jobs:
       shell: bash
       run: |
         tox -e py
+
+    - name: Upload coverage
+      uses: codecov/codecov-action@v1
+      with:
+        name: ${{ matrix.os }} Python ${{ matrix.python-version }}

pytest.ini

@@ -1,4 +1,3 @@
 [pytest]
 norecursedirs = .git .*
 addopts = -rsxX --showlocals --tb=native --cov=tablib --cov=tests --cov-report xml --cov-report term --cov-report html
-python_paths = .