Add the occurred exception to the kafka error validations

[osoykan]

test("when failing event is published then it should be validated") {
    data class FailingEvent(val id: Long)
    TestSystem.validate {
        kafka {
            publish("trendyol.stove.service.product.failing.0", FailingEvent(5L))
            shouldBeFailedOnCondition<FailingEvent> { actual, exception ->
                actual.id == 5L && exception is BusinessException
            }
            shouldBeFailed(message = FailingEvent(5L), exception = BusinessException("Failing product create event"))
        }
    }
}

[osoykan]

Implemented in #96