fix workflow

Author: eacharles

.github/workflows/testing-and-coverage.yml

@@ -33,6 +33,6 @@ jobs:
       run: |
         python -m pytest tests --cov=src/cdfvi --cov-report=xml
     - name: Upload coverage report to codecov
-uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v4
       with:
         token: ${{ secrets.CODECOV_TOKEN }}