Update CHANGELOG.md

Author: ramsessanchez

CHANGELOG.md

@@ -11,6 +11,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [0.38.0] - 2022-01-20
+
+### Added
+
+- Models and Requests related, but not limited to, CloudPc, ManagedDevice, SkypeUser/SkypeBusinessConversationMember, and DomainFederation/Federated behavior. 
+
+### Changed
+
+- Updated beta models and request builders generated using Typewriter, based on latest Beta-Metadata. 
+
 ## [0.37.0] - 2022-01-11
 
 ### Added