Bump phpunit/phpunit from 9.4.0 to 9.4.2

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.4.0 to 9.4.2.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-9.4.md)
- [Commits](sebastianbergmann/phpunit@9.4.0...9.4.2)

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