Bump version to v0.9.0

CHANGELOG.md

@@ -10,7 +10,7 @@ The format is based on [Keep a Changelog], and this project adheres to
 [Keep a Changelog]: https://keepachangelog.com/en/1.0.0/
 [Semantic Versioning]: https://semver.org/spec/v2.0.0.html
 
-## [Unreleased]
+## [0.9.0] - 2024-03-18
 
 ### Added
 
@@ -194,6 +194,7 @@ This eliminates the need for duplicating all of the generic algorithms (such as
 [0.6.0]: https://github.com/dogmatiq/persistencekit/releases/tag/v0.6.0
 [0.7.0]: https://github.com/dogmatiq/persistencekit/releases/tag/v0.7.0
 [0.8.0]: https://github.com/dogmatiq/persistencekit/releases/tag/v0.8.0
+[0.9.0]: https://github.com/dogmatiq/persistencekit/releases/tag/v0.9.0
 
 <!-- version template
 ## [0.0.1] - YYYY-MM-DD