add changelog

CHANGELOG.md

@@ -3,7 +3,13 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
-## Unreleased
+
+## [v0.8.6]
+### Fixed
+- Relax version requirement for smart-open (Fixes #273)
+- Use uv pip in docker build
+
+## [v0.8.5]
 
 ### Fixed
 - Fix issue when installing or migrating pgstac using a non superuser (particularly when using the default role found on RDS). (FIXES #239). Backports fix into migrations for 0.8.2, 0.8.3, and 0.8.4.