Update changelog-0.9.x.md (#1652)

docs/CHANGELOG/changelog-0.9.x.md

@@ -142,3 +142,9 @@ To further harden Claudie, you may want to deploy our pre-defined network polici
 ## Bug fixes
 - Correctly turn HTTP proxy on/off [#1636](https://github.com/berops/claudie/pull/1636).
   HTTP proxy feature introduced in v0.9.1 was not working correctly mostly when switching between the on/off mode.
+
+## v0.9.4
+
+## Bug fixes
+* Fix backwards compatibility with changes introduced in Claudie version 0.9.3 for clusters build using older versions 0.9.x [#1651](https://github.com/berops/claudie/pull/1651).
+ If you built your cluster using the Claudie version 0.9.3, you can ignore this minor release.