build(deps): update mockito requirement from 0.19 to 0.20
build(deps): update mockito requirement from 0.19 to 0.20

Updates the requirements on [mockito](https://github.com/lipanski/mockito) to permit the latest version.
- [Release notes](https://github.com/lipanski/mockito/releases)
- [Commits](https://github.com/lipanski/mockito/compare/0.19.0...0.20.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
UpdateHub/updatehub