Update dependency phpunit/phpunit to v9.5.28

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
phpunit/phpunit (source)	require-dev	patch	9.5.25 -> 9.5.28

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Release Notes

sebastianbergmann/phpunit

### [`v9.5.28`](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.27...9.5.28) [Compare Source](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.27...9.5.28) ### [`v9.5.27`](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.26...9.5.27) [Compare Source](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.26...9.5.27) ### [`v9.5.26`](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.25...9.5.26) [Compare Source](https://togithub.com/sebastianbergmann/phpunit/compare/9.5.25...9.5.26)

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