Remove dependency to mockito-all

[nulls]

What's done:

• just remove dependency
• refactored a test to avoid using Mockito since it's required Java 11

It closes #1753

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (ad37745) 78.39% compared to head (919db12) 78.39%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1811 +/- ## ========================================= Coverage 78.39% 78.39% Complexity 2432 2432 ========================================= Files 128 128 Lines 8578 8578 Branches 2151 2151 ========================================= Hits 6725 6725 Misses 893 893 Partials 960 960 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.