Bump phpunit/phpunit from 8.4.1 to 8.4.2
Bump phpunit/phpunit from 8.4.1 to 8.4.2

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 8.4.1 to 8.4.2.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-8.4.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/8.4.1...8.4.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Daniel-Griffiths/Vertex,Daniel-Griffiths/Vertex,Daniel-Griffiths/Vertex