Bump html-proofer from 3.18.0 to 3.18.5

Bumps html-proofer from 3.18.0 to 3.18.5.

Commits

• 3bb8d35 💎 bump to 3.18.5
• 1a82ade Merge pull request #616 from gjtorikian/check-crap-urls
• 72ca510 Rejigger test
• 65057a5 💎 bump to 3.18.4
• e1e02f6 Catch bad URLs
• 84362d6 💎 bump to 3.18.3
• b7e39a5 Merge pull request #613 from tisba/allow-ruby-3-0
• 68f4cae limits ruby version to be < 4.0
• 575c6f5 allows Ruby 3.0 to be used
• 480c471 💎 bump to 3.18.2
• Additional commits viewable in compare view