Add Codecov token to fix coverage upload

Author: hugovk

.github/workflows/test.yml

@@ -22,4 +22,6 @@ jobs:
           tox -e py
 
       - name: Upload coverage
-        uses: codecov/[email protected]
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_ORG_TOKEN }}