add changelog

Author: dimastbk

Diff for: CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- `opentelemetry-instrumentation-aiokafka` Add instrumentor and auto instrumentation support for aiokafka
+  ([#2082](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2082))
+
 ## Version 1.27.0/0.48b0 ()
 
 ### Added