chore(deps): update dependency org.mockito:mockito-core to v4

This MR contains the following updates:

Package	Update	Change
org.mockito:mockito-core	major	3.12.4 -> 4.0.0

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Release Notes

mockito/mockito

v4.0.0

Mockito 4: Removing deprecated APIs.

All of these APIs have been marked as deprecated and have been present in Mockito for quite a while.

An overview of now-deleted classes/methods:

• org.mockito.Matchers which was an alias for org.mockito.ArgumentMatchers
• org.mockito.ArgumentMatchers#{anyObject,anyVararg} both which were aliases for org.mockito.ArgumentMatchers#any
• org.mockito.ArgumentMatchers#any*Of, which were aliases for the same method name without the Of and the generic parameters (which were ignored)
• org.mockito.ArgumentMatchers#{is}{Not}Null(Class) which took a class which was ignored. Aliases for the same methods without the parameter
• org.mockito.MockedStatic#verify which had the parameter types reversed
• org.mockito.Mockito#verifyZeroInteractions an alias of verifyNoMoreInteractions
• org.mockito.Mockito#debug framework integration API that we later refactored
• org.mockito.configuration.AnnotationEngine which was leaking internal APIs and instead users should use org.mockito.plugins.AnnotationEngine
• org.mockito.exceptions.verification.TooLittleActualInvocations fixed the grammar from "Little" to "Few"
• Numerous internal APIs that we never officially supported and can now remove
• org.mockito.plugins.InstantiatorProvider which was leaking internal APIs and instead users should use InstantiatorProvider2 (we should probably rename back to remove the number in a future major release)
• org.mockito.runners a package that hosted several old JUnit runners which were no longer supported. Users should instead use org.mockito.junit.MockitoJUnitRunner which is our official JUnit4 runner.

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