infra: bump codecov/codecov-action from 3.1.4 to 3.1.5 (#863)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@eaaf4be...4fe8c5f)

.github/workflows/python-package.yml

@@ -36,5 +36,5 @@ jobs:
       run: |
         tox -e unit-tests
     - name: Upload coverage report to Codecov
-      uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d # v3.1.4
+      uses: codecov/codecov-action@4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0 # v3.1.5
       if: ${{ strategy.job-index }} == 0