Bump mockito-core from 3.12.4 to 4.0.0

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.12.4 to 4.0.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v3.12.4...v4.0.0

)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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