Update changelog with changes from v2.20.3

Author: newrelic-coreint-bot

CHANGELOG.md

@@ -9,6 +9,12 @@ Unreleased section should follow [Release Toolkit](https://github.com/newrelic/r
 
 ## Unreleased
 
+## v2.20.3 - 2025-08-26
+
+### ⛓️ Dependencies
+- Updated golang patch version to v1.24.6
+- Updated github.com/microsoft/go-mssqldb to v1.9.3 - [Changelog 🔗](https://github.com/microsoft/go-mssqldb/releases/tag/v1.9.3)
+
 ## v2.20.2 - 2025-08-12
 
 ### 🐞 Bug fixes