Bump codecov/codecov-action from 2.0.2 to 4.6.0 (#118)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 2.0.2 to 4.6.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v2.0.2...v4.6.0)

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

.github/workflows/ci.yaml

@@ -51,7 +51,7 @@ jobs:
     - name: Run tests
       run: make test
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v2.0.2
+      uses: codecov/codecov-action@v4.6.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: .coverage.xml