doc: update changelog

Author: tomplus

CHANGELOG.md

@@ -1,7 +1,9 @@
-# v9.0.1
+# v9.1.0
 
 * feat: check whether an object key is present on watch ([#71](https://github.com/tomplus/kubernetes_asyncio/pull/71), [@mickours](https://github.com/mickours))
 
+* feat: feat: merging kubeconfig files ([#69](https://github.com/tomplus/kubernetes_asyncio/pull/69), [@tomplus](https://github.com/tomplus))
+
 # v9.0.0
 
 * feat: switch to openapi-generator ([#58](https://github.com/tomplus/kubernetes_asyncio/pull/58), [@tomplus](https://github.com/tomplus))