Version the upcoming release as a patch version bump

CHANGELOG.md

@@ -5,14 +5,15 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
-### Changed
-- Stop including syslog and Logentries-related files
-- Stop installing/using runny (since we don't log to syslog anymore)
+
+## [5.5.2]
 ### Fixed
 - Upgrade PHP to 7.4 again (but stay with Ubuntu base O/S)
 - Upgrade Ubuntu to 20.04
 - Upgrade Composer to 2
 - Switch from fxp's composer-asset-plugin to asset-packagist
+- Stop including syslog and Logentries-related files
+- Stop installing/using runny (since we don't log to syslog anymore)
 
 ## [5.5.1]
 ### Changed