Change notes for v0.2.3 (#109)

This should be merged after #108

Also added missing notes for `v0.2.2`

Author: alpeb

CHANGES.md

@@ -1,5 +1,15 @@
 # Changes
 
+## v0.2.3
+
+Replaced `curlimages/curl` docker image in the `namespace-metadata` Job with
+linkerd's `extension-init` image, to avoid all the OS luggage included in the
+former, which generates CVE alerts.
+
+## v0.2.2
+
+This is a maintenance release which upgrades a number of dependencies.
+
 ## v0.2.1
 
 This is a maintenance release which upgrades a number of dependencies and moves