Bump html-proofer from 3.17.2 to 3.17.3

Bumps html-proofer from 3.17.2 to 3.17.3.

Commits

• 21b0edd bump to 3.17.3
• 0f0722a Merge pull request #603 from gjtorikian/broken-hash-reporting
• d4c5b30 lint
• 93d4235 Provide path to issue creation
• ebd9d4c no need
• b2af233 Merge pull request #600 from gjtorikian/add-ci-linting
• ea5eea2 bust cache I guess
• e19f314 workflow updates
• a4638d2 gem updates
• 5d2ebbf Merge branch 'main' into add-ci-linting
• Additional commits viewable in compare view