chore(ci): bump codecov/codecov-action in the github-actions group

Bumps the github-actions group with 1 update: [codecov/codecov-action](https://github.com/codecov/codecov-action).


Updates `codecov/codecov-action` from 5.5.2 to 6.0.0
- [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/v5.5.2...v6.0.0)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

.github/workflows/ci.yaml

@@ -28,6 +28,6 @@ jobs:
       - name: Tests
         run: pytest --cov=switchbot --cov-report=term-missing --cov-report=xml tests
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5.5.2
+        uses: codecov/codecov-action@v6.0.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }} # required