CHANGELOG: add entry for fluent-bit annotation addition

Author: eg-ayoub

CHANGELOG.md

@@ -60,6 +60,9 @@
 - Implement ability to add certificates to fluent-bit by mounting a fluent-bit-certs secret
   (PR[#4812](https://github.com/scality/metalk8s/pull/4812))
 
+- Ensure fluent-bit pods are restarted when it's configmap or secret is modified
+  (PR[#4834](https://github.com/scality/metalk8s/pull/4834))
+
 ### Bug Fixes
 
 - Fix a bug where part of the upgrade process would silently be skipped