Update CHANGELOG.md

Author: ramsessanchez

CHANGELOG.md

@@ -11,6 +11,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [5.53.0] - 2023-04-11
+
+### Added
+
+- Added BrowserSharedCookie model and derived type instances/requests.  
+- Added BrowserSites model and derived type instances/requests.
+
 ## [5.52.0] - 2023-04-04
 
 ### Added