build(deps-dev): bump html-validate from 4.7.0 to 4.7.1 (#109)

Bumps [html-validate](https://gitlab.com/html-validate/html-validate) from 4.7.0 to 4.7.1.
- [Release notes](https://gitlab.com/html-validate/html-validate/tags)
- [Changelog](https://gitlab.com/html-validate/html-validate/blob/master/CHANGELOG.md)
- [Commits](https://gitlab.com/html-validate/html-validate/compare/v4.7.0...v4.7.1)

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Author: dependabot[bot]