spectral-v10.18.6

• Update deps, including TS 6 by @ryanwersal in https://github.com/prismatic-io/spectral/pull/452
• Enable useImportType; apply to repo by @ryanwersal in https://github.com/prismatic-io/spectral/pull/463

Full Changelog: https://github.com/prismatic-io/spectral/compare/spectral-v10.18.5...spectral-v10.18.6