Bump codecov/codecov-action from 5.1.2 to 5.3.1 (#205)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.1.2 to 5.3.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5.1.2...v5.3.1)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/pythonpackage.yml

@@ -47,7 +47,7 @@ jobs:
         pytest --cov=micom --cov-report=xml
     - name: Upload to codecov
       if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
-      uses: codecov/codecov-action@v5.1.2
+      uses: codecov/codecov-action@v5.3.1
       env:
         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}