chore(deps-dev): bump pa11y-ci from 3.1.0 to 4.0.0

Bumps [pa11y-ci](https://github.com/pa11y/pa11y-ci) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/pa11y/pa11y-ci/releases)
- [Changelog](https://github.com/pa11y/pa11y-ci/blob/main/CHANGELOG.md)
- [Commits](pa11y/pa11y-ci@3.1.0...4.0.0)

---
updated-dependencies:
- dependency-name: pa11y-ci
  dependency-version: 4.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]