Update dependency phpunit/phpunit to v9.5.8

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
phpunit/phpunit (source)	require-dev	patch	9.5.6 -> 9.5.8

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Release Notes

sebastianbergmann/phpunit

### [`v9.5.8`](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.7...9.5.8) [Compare Source](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.7...9.5.8) ### [`v9.5.7`](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.6...9.5.7) [Compare Source](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.6...9.5.7)

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