Update changelog with changes from v5.4.4

Author: newrelic-coreint-bot

CHANGELOG.md

@@ -9,7 +9,9 @@ Unreleased section should follow [Release Toolkit](https://github.com/newrelic/r
 
 ## Unreleased
 
-### bugfix
+## v5.4.4 - 2025-09-16
+
+### 🐞 Bug fixes
 - Add null check while populating Indices stats metrics
 
 ## v5.4.3 - 2025-08-28