update changelog

Author: Phil Varner

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.5.2] - 2023-01-17
+
+### Fixed
+
+- When cross-cluster search is configured, the first search without a collection returned
+  zero results.
+
 ## [0.5.1] - 2023-01-10
 
 ### Changed