Bump mockito-kotlin from 2.1.0 to 2.2.0

Bumps [mockito-kotlin](https://github.com/nhaarman/mockito-kotlin) from 2.1.0 to 2.2.0.
- [Release notes](https://github.com/nhaarman/mockito-kotlin/releases)
- [Commits](mockito/mockito-kotlin@2.1.0...2.2.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -18,7 +18,7 @@ ext.deps = [ rxjava2              : 'io.reactivex.rxjava2:rxjava:2.2.12',
              truth                : 'com.google.truth:truth:1.0',
              robolectric          : 'org.robolectric:robolectric:4.3',
              mockitocore          : 'org.mockito:mockito-core:3.0.0',
-             mockitokotlin        : 'com.nhaarman.mockitokotlin2:mockito-kotlin:2.1.0',
+             mockitokotlin        : 'com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0',
              dokka                : 'org.jetbrains.dokka:dokka-gradle-plugin:0.9.18',
              detekt               : "gradle.plugin.io.gitlab.arturbosch.detekt:detekt-gradle-plugin:$detektVersion",
              gradlebuildtools     : 'com.android.tools.build:gradle:3.5.0',