Update dependency org.mockito.kotlin:mockito-kotlin to v6

Author: renovate[bot]

gradle/libs.versions.toml

@@ -23,7 +23,7 @@ ktorfitGradle = "2.7.2"
 ktorfitGradlePlugin = "2.7.1"
 ktorVersion = "3.3.3"
 mockk = "1.14.7"
-mockito-kotlin = "4.1.0"
+mockito-kotlin = "6.2.1"
 gradleMavenPublishPlugin = "0.35.0"
 vannikMavenPublish = "0.35.0"
 licensee = "1.14.1"