Linter: Update html-anchor-require-href with erblint-github insights

[marcoroth]

This pull request updates the html-anchor-require-href rule with the findings from the GitHub::Accessibility::LinkHasHref rule from erblint-github.

Resolves #1221

[pkg-pr-new]

npx https://pkg.pr.new/@herb-tools/formatter@1228

npx https://pkg.pr.new/@herb-tools/language-server@1228

npx https://pkg.pr.new/@herb-tools/linter@1228

commit: 2a8a8a7

[github-actions]

🌿 Interactive Playground and Documentation Preview

A preview deployment has been built for this pull request. Try out the changes live in the interactive playground:

• Playground Preview
• Documentation Preview
• Website Preview

---

_{🌱 Grown from commit 2a8a8a7}

---

✅ Preview deployment has been cleaned up.