codecov only on linux

.github/workflows/build_and_test.yml

@@ -36,6 +36,7 @@ jobs:
         run: |
           pytest -m 'not requires_pufcsv and not pre_release and not local' --cov=./ --cov-report=xml
       - name: Upload coverage to Codecov
+        if: matrix.os == 'ubuntu-latest'
         uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos