Bump govuk-lint from 3.5.0 to 3.6.0
Bump govuk-lint from 3.5.0 to 3.6.0

Bumps [govuk-lint](https://github.com/alphagov/govuk-lint) from 3.5.0 to 3.6.0.
- [Changelog](https://github.com/alphagov/govuk-lint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/alphagov/govuk-lint/compare/v3.5.0...v3.6.0)
alphagov/manuals-publisher,alphagov/manuals-publisher,alphagov/manuals-publisher