SUPPORT-9518: add comment for workaround

src/main/java/ru/micord/ervu/av/kafka/config/input/InputKafkaConsumerConfig.java

@@ -93,6 +93,8 @@ public class InputKafkaConsumerConfig {
         (record, ex) -> LOGGER.error("recovery failed for message {}, {}", record.value(), ex.getMessage()),
         new FixedBackOff(recoveryInterval, maxRecoveryAttempts)
     );
+    // workaround to hide redundant logging
+    // https://github.com/spring-projects/spring-kafka/issues/3409#issuecomment-2276147858
     handler.setLogLevel(KafkaException.Level.TRACE);
     return handler;
   }