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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ auto-service-ksp = "dev.zacsweers.autoservice:auto-service-ksp:1.2.0"
 junit-jupiter-engine = { module = "org.junit.jupiter:junit-jupiter-engine", version.ref = "junitVersion" }
 junit-jupiter-params = { module = "org.junit.jupiter:junit-jupiter-params", version.ref = "junitVersion" }
 truth = "com.google.truth:truth:1.4.5"
-mockito-kotlin = "org.mockito.kotlin:mockito-kotlin:4.1.0"
+mockito-kotlin = "org.mockito.kotlin:mockito-kotlin:6.2.0"
 log4j-core = { module = "org.apache.logging.log4j:log4j-core", version.ref = "log4jVersion" }
 log4j-api = { module = "org.apache.logging.log4j:log4j-api", version.ref = "log4jVersion" }
 jimfs = "com.google.jimfs:jimfs:1.3.1"