Update CHANGELOG.md to reflect non-release of kafka-client (#235)

Author: milindl

CHANGELOG.md

@@ -1,11 +1,16 @@
-# confluent-kafka-javascript v1.1.0
+# confluent-kafka-javascript v1.2.0
 
-v1.1.0 is a feature release. It is supported for all usage.
+v1.2.0 is a feature release. It is supported for all usage.
 
 ## Enhancements
 
 1. Add support for an Admin API to fetch topic offsets by timestamp (#206).
 
+
+# confluent-kafka-javascript v1.1.0
+
+v1.1.0 is a feature release. It is supported for all usage.
+
 ## Fixes
 
 1. Ensure algorithm query param is passed for CSFLE (#230)