build(deps-dev): bump @stoplight/spectral-cli from 6.11.1 to 6.13.1

Bumps [@stoplight/spectral-cli](https://github.com/stoplightio/spectral) from 6.11.1 to 6.13.1.
- [Release notes](https://github.com/stoplightio/spectral/releases)
- [Changelog](https://github.com/stoplightio/spectral/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/stoplightio/spectral/compare/@stoplight/spectral-cli-6.11.1...@stoplight/spectral-cli-6.13.1)

---
updated-dependencies:
- dependency-name: "@stoplight/spectral-cli"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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