Update listener observation operation tag

This updates the listener observation operation tag according to latest standard.

Signed-off-by: Christian Fredriksson <[email protected]>

Author: cfredri4

spring-kafka/src/main/java/org/springframework/kafka/support/micrometer/KafkaListenerObservation.java

@@ -231,7 +231,7 @@ public KeyValues getLowCardinalityKeyValues(KafkaRecordReceiverContext context)
 			KeyValues keyValues = KeyValues.of(
 					ListenerLowCardinalityTags.LISTENER_ID.withValue(context.getListenerId()),
 					ListenerLowCardinalityTags.MESSAGING_SYSTEM.withValue("kafka"),
-					ListenerLowCardinalityTags.MESSAGING_OPERATION.withValue("receive"),
+					ListenerLowCardinalityTags.MESSAGING_OPERATION.withValue("process"),
 					ListenerLowCardinalityTags.MESSAGING_SOURCE_NAME.withValue(context.getSource()),
 					ListenerLowCardinalityTags.MESSAGING_SOURCE_KIND.withValue("topic")
 			);