Bump phpunit/phpunit from 10.5.10 to 10.5.11 in /examples/php-phpunit

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 10.5.10 to 10.5.11.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.11/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.10...10.5.11)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]