feat(gradle): upgrade mockito version to 2.13.0#5689

tomatoishealthy merged 1 commit intotronprotocol:release_v4.7.4tronprotocol/java-tron:release_v4.7.4from

tomatoishealthy:feature/mock-version-upgradetomatoishealthy/java-tron:feature/mock-version-upgradeCopy head branch name to clipboard