👷 Upgrade to codecov v5

Author: sergei-maertens

.github/workflows/ci.yml

@@ -49,8 +49,9 @@ jobs:
           DJANGO: ${{ matrix.django }}
 
       - name: Publish coverage report
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           directory: reports/
 
   e2e_tests: