docs: add changelog for PR 14079

changes/ee/fix-14079.en.md

@@ -0,0 +1,5 @@
+Fix Kafka consumer latency issue when partitions share the same partition leader in Kafka.
+
+When fetching from a Kafka partition leader, the request is blocked until the previously sent fetch requests have returned.
+This is because Kafka only serves one inflight fetch request at a time, it causes a head-of-line blocking if there happends to be more than one partitions sharing the same parition leader broker.
+The fix in this change is to make sure partition consumers create their own TCP connection to the partition leader.