Bump php-mock/php-mock-phpunit from 2.7.2 to 2.8.0 (#2089)

Bumps [php-mock/php-mock-phpunit](https://github.com/php-mock/php-mock-phpunit) from 2.7.2 to 2.8.0.
- [Release notes](https://github.com/php-mock/php-mock-phpunit/releases)
- [Commits](php-mock/php-mock-phpunit@2.7.2...2.8.0)

---
updated-dependencies:
- dependency-name: php-mock/php-mock-phpunit
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>