Add token and rename file input

Author: vweevers

.github/workflows/test.yml

@@ -29,4 +29,5 @@ jobs:
       - name: Codecov
         uses: codecov/codecov-action@v5
         with:
-          file: coverage/lcov.info
+          files: coverage/lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}