chore(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](codecov/codecov-action@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/rust.yml

@@ -173,7 +173,7 @@ jobs:
  - name: Upload to codecov.io 📊
  id: upload-codecov
  if: github.ref == 'refs/heads/main' && !github.event.check_run.conclusion
- uses: codecov/codecov-action@v3
+ uses: codecov/codecov-action@v4
  with:
  token: ${{ secrets.CODECOV_TOKEN }}
  fail_ci_if_error: false