Update changelog with changes from v1.38.1

Author: NewRelic-K8s-Agents-Bot

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## v1.38.1 - 2025-10-20
+
+### ⛓️ Dependencies
+- Updated golang.org/x/crypto to v0.42.0
+- Updated go to v1.25.3
+
 ## v1.38.0 - 2025-10-13
 
 ### dependency