Bump mockito-core from 3.4.4 to 3.4.6

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.4.4 to 3.4.6.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](https://github.com/mockito/mockito/compare/v3.4.4...v3.4.6

)

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