Update dependency org.mockito:mockito-core to v3.12.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.mockito:mockito-core	3.12.0 -> 3.12.3

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Release Notes

mockito/mockito

### [`v3.12.3`](https://togithub.com/mockito/mockito/releases/v3.12.3) ^{*Changelog generated by [Shipkit Changelog Gradle Plugin](https://togithub.com/shipkit/shipkit-changelog)*} ##### 3.12.3 - 2021-08-24 - [9 commit(s)](https://togithub.com/mockito/mockito/compare/v3.12.2...v3.12.3) by Rafael Winterhalter - Fix implementation of proxy mock maker for toString and add additional unit tests. [(#​2405)](https://togithub.com/mockito/mockito/pull/2405) - Avoid cache breakage [(#​2402)](https://togithub.com/mockito/mockito/pull/2402) - Add a limited mock maker that is based only on the java.lang.reflect.Proxy utility [(#​2397)](https://togithub.com/mockito/mockito/pull/2397) ### [`v3.12.2`](https://togithub.com/mockito/mockito/releases/v3.12.2) ^{*Changelog generated by [Shipkit Changelog Gradle Plugin](https://togithub.com/shipkit/shipkit-changelog)*} ##### 3.12.2 - 2021-08-24 - [2 commit(s)](https://togithub.com/mockito/mockito/compare/v3.12.1...v3.12.2) by Dmitry Vyazelenko, dependabot\[bot] - Fixes [#​2399](https://togithub.com/mockito/mockito/issues/2399) : Adds defaultAnswer to the MockitoMockKey to distinguish the mock types, i.e. to separate mocks from spies otherwise spy type is reused for a mock or vice versa. [(#​2400)](https://togithub.com/mockito/mockito/pull/2400) - Sporadic mock verification failures related to hashCode/equals on 3.12.1 [(#​2399)](https://togithub.com/mockito/mockito/issues/2399) - Bump versions.errorprone from 2.8.1 to 2.9.0 [(#​2396)](https://togithub.com/mockito/mockito/pull/2396) ### [`v3.12.1`](https://togithub.com/mockito/mockito/releases/v3.12.1) ^{*Changelog generated by [Shipkit Changelog Gradle Plugin](https://togithub.com/shipkit/shipkit-changelog)*} ##### 3.12.1 - 2021-08-20 - [2 commit(s)](https://togithub.com/mockito/mockito/compare/v3.12.0...v3.12.1) by Tim van der Lippe, dependabot\[bot] - Fix verifyNoMoreInteractions inOrder invocations for spies [(#​2395)](https://togithub.com/mockito/mockito/pull/2395) - Regression with InOrder verification after [#​2369](https://togithub.com/mockito/mockito/issues/2369) [(#​2394)](https://togithub.com/mockito/mockito/issues/2394) - Bump versions.bytebuddy from 1.11.12 to 1.11.13 [(#​2393)](https://togithub.com/mockito/mockito/pull/2393)

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