Bump ezyang/htmlpurifier from 4.13.0 to 4.14.0 (PHPOffice#2479)

Bumps [ezyang/htmlpurifier](https://github.com/ezyang/htmlpurifier) from 4.13.0 to 4.14.0.
- [Release notes](https://github.com/ezyang/htmlpurifier/releases)
- [Changelog](https://github.com/ezyang/htmlpurifier/blob/master/NEWS)
- [Commits](ezyang/htmlpurifier@v4.13.0...v4.14.0)

---
updated-dependencies:
- dependency-name: ezyang/htmlpurifier
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Scrutinizer was canceled, but there's no reason it would be needed for this PR. Merging this change.