Add support to Phpunit 10

[llaville]

Following recommendation of Sebastian Bergmann on sebastianbergmann/phpunit#5157 issue.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	yes		no	3.0s
✅ PHP	phpcs	yes		no	0.87s
✅ PHP	phplint	yes		no	3.41s
✅ PHP	phpstan	yes		no	8.9s

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Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

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