Bump govuk-lint from 3.11.5 to 4.0.0
Bump govuk-lint from 3.11.5 to 4.0.0

Bumps [govuk-lint](https://github.com/alphagov/govuk-lint) from 3.11.5 to 4.0.0.
- [Release notes](https://github.com/alphagov/govuk-lint/releases)
- [Changelog](https://github.com/alphagov/govuk-lint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/alphagov/govuk-lint/compare/v3.11.5...v4.0.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alphagov/release,alphagov/release,alphagov/release