Bump mockito-core from 3.12.4 to 4.0.0 (#262)

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.12.4 to 4.0.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.12.4...v4.0.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

app/build.gradle

@@ -157,7 +157,7 @@ dependencies {
     testImplementation 'androidx.test:core:1.4.0'
     testImplementation 'org.robolectric:robolectric:4.5.1'
     testImplementation 'com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0'
-    testImplementation 'org.mockito:mockito-core:3.12.4'
+    testImplementation 'org.mockito:mockito-core:4.0.0'
 
     androidTestImplementation "org.junit.jupiter:junit-jupiter-api:$JUNIT_VERSION"
     androidTestImplementation "org.junit.vintage:junit-vintage-engine:$JUNIT_VERSION"