Bump html-proofer from 3.18.5 to 3.18.6
Bump html-proofer from 3.18.5 to 3.18.6

Bumps [html-proofer](https://github.com/gjtorikian/html-proofer) from 3.18.5 to 3.18.6.
- [Release notes](https://github.com/gjtorikian/html-proofer/releases)
- [Commits](https://github.com/gjtorikian/html-proofer/compare/v3.18.5...v3.18.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
mark-monteiro/mark-monteiro.github.io,mark-monteiro/mark-monteiro.github.io,mark-monteiro/mark-monteiro.github.io