Update ci_tests.yml

Author: dweindl

.github/workflows/ci_tests.yml

@@ -54,5 +54,5 @@ jobs:
       uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
-        file: ./coverage.xml
+        files: ./coverage.xml
       if: matrix.platform == 'ubuntu-latest'