fix(confluent-kafka): use PUBLISH operation for producer spans

wrap_produce was setting messaging.operation=RECEIVE on producer spans.
The correct OTel semantic value for a send/produce operation is PUBLISH.

Fixes #4292

Signed-off-by: alliasgher <alliasgher123@gmail.com>

Author: alliasgher

instrumentation/opentelemetry-instrumentation-confluent-kafka/src/opentelemetry/instrumentation/confluent_kafka/__init__.py

@@ -370,8 +370,8 @@ def wrap_produce(func, instance, tracer, args, kwargs):
             _enrich_span(
                 span,
                 topic,
-                operation=MessagingOperationTypeValues.RECEIVE,
-            )  # Replace
+                operation=MessagingOperationTypeValues.PUBLISH,
+            )
             propagate.inject(
                 headers,
                 setter=_kafka_setter,