Bump version to v0.13.4.

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]
+## [0.13.4] - 2024-08-16
 
 ### Added
 
@@ -307,6 +307,7 @@ interfaces. It does not yet include support for static analysis of the new
 [0.13.1]: https://github.com/dogmatiq/configkit/releases/v0.13.1
 [0.13.2]: https://github.com/dogmatiq/configkit/releases/v0.13.2
 [0.13.3]: https://github.com/dogmatiq/configkit/releases/v0.13.3
+[0.13.4]: https://github.com/dogmatiq/configkit/releases/v0.13.4
 
 <!-- version template
 ## [0.0.1] - YYYY-MM-DD