Bump mockito-core from 2.22.0 to 2.23.0

Bumps [mockito-core](https://github.com/mockito/mockito) from 2.22.0 to 2.23.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v2.22.0...v2.23.0

)

Signed-off-by: dependabot[bot] <support@dependabot.com>