Bump mock from 4.0.3 to 5.0.0

Bumps [mock](https://github.com/testing-cabal/mock) from 4.0.3 to 5.0.0.
- [Release notes](https://github.com/testing-cabal/mock/releases)
- [Changelog](https://github.com/testing-cabal/mock/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/testing-cabal/mock/compare/4.0.3...5.0.0

)

---
updated-dependencies:
- dependency-name: mock
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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