Update phpunit/phpunit requirement from ^8.5.13 to ^8.5.14
Update phpunit/phpunit requirement from ^8.5.13 to ^8.5.14

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-8.5.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/8.5.13...8.5.14)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
neilime/ansi-escapes-to-html,neilime/ansi-escapes-to-html,neilime/ansi-escapes-to-html