update changelog (#126)

Author: iwysiu

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## v0.23.1
+
+-Fix warning for getting GF_SECURE_SOCKS_DATASOURCE_PROXY_SERVER_ENABLED env variable [#125](https://github.com/grafana/grafana-aws-sdk/pull/125)
+
 ## v0.23.0
 
 - Deprecate using environment variables for auth settings in sessions [#121](https://github.com/grafana/grafana-aws-sdk/pull/121)