build(deps): bump mockito from 1.5.0 to 1.6.1

Bumps [mockito](https://github.com/lipanski/mockito) from 1.5.0 to 1.6.1.
- [Release notes](https://github.com/lipanski/mockito/releases)
- [Commits](lipanski/mockito@1.5.0...1.6.1)

---
updated-dependencies:
- dependency-name: mockito
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>