Update dependency org.mockito:mockito-core to v5.19.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ hivemq-mqttClient = "1.3.7"
 jetbrains-annotations = "26.0.2"
 junit-jupiter = "5.10.0"
 logback = "1.5.18"
-mockito = "5.18.0"
+mockito = "5.19.0"
 protobuf = "3.25.8"
 testcontainers = "1.21.3"
 wiremock = "3.13.1"