build(deps): bump posthtml-extra-attributes from 2.0.0 to 3.1.1

Bumps [posthtml-extra-attributes](https://github.com/posthtml/posthtml-extra-attributes) from 2.0.0 to 3.1.1.
- [Release notes](https://github.com/posthtml/posthtml-extra-attributes/releases)
- [Commits](posthtml/posthtml-extra-attributes@v2.0.0...v3.1.1)

---
updated-dependencies:
- dependency-name: posthtml-extra-attributes
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>