Update dependency org.mockito:mockito-core to v5.18.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ hivemq-extensionSdk = "4.5.3"
 hivemq-mqttClient = "1.3.5"
 junit-jupiter = "5.10.0"
 logback = "1.5.18"
-mockito = "5.17.0"
+mockito = "5.18.0"
 protobuf = "3.25.7"
 testcontainers = "1.21.0"
 wiremock = "3.13.0"