ci(deps): bump codecov/codecov-action from 3 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/automated-tests.yml

@@ -92,7 +92,7 @@ jobs:
             # ----------------------------------------------
             - name: Upload coverage
               if: github.ref == 'refs/heads/main' && matrix.python-version == '3.11'
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               with:
                   # token: ${{ secrets.CODECOV_TOKEN }} # Only required for private repositories
                   files: reports/coverage.xml