chore(deps): update dependency povils/phpmnd to v2.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
povils/phpmnd	require-dev	minor	2.3.0 -> 2.4.0

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Release Notes

povils/phpmnd

### [`v2.4.0`](https://togithub.com/povils/phpmnd/releases/v2.4.0) [Compare Source](https://togithub.com/povils/phpmnd/compare/v2.3.0...v2.4.0) - Add GA instead of TravisCI - Support PHP 8

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