add changelog

Author: kevinxh

packages/pwa-kit-runtime/CHANGELOG.md

@@ -1,3 +1,6 @@
+## v3.9.2 (Mar 08, 2025)
+- Disable CloudWatch metrics sender retries [#2304](https://github.com/SalesforceCommerceCloud/pwa-kit/pull/2304) 
+
 ## v3.9.1 (Mar 05, 2025)
 - Update PWA-Kit SDKs to v3.9.1 [#2301](https://github.com/SalesforceCommerceCloud/pwa-kit/pull/2301)
 - Remove forced garbage collection on each invocation. Set `FORCE_GC=true` for the old behavior.