chore: update changelog

Author: gadomski

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [0.8.3] - 2025-09-24
+
 ### Changed
 
 - Don't set geo metadata for `proj:geometry` ([rustac #808](https://github.com/stac-utils/rustac/pull/808), [#161](https://github.com/stac-utils/rustac-py/pull/161))
@@ -247,7 +249,8 @@ Non-functional release to fix releasing from Github actions.
 
 Initial release.
 
-[Unreleased]: https://github.com/stac-utils/rustac-py/compare/v0.8.2...main
+[Unreleased]: https://github.com/stac-utils/rustac-py/compare/v0.8.3...main
+[0.8.3]: https://github.com/stac-utils/rustac-py/compare/v0.8.2...v0.8.3
 [0.8.2]: https://github.com/stac-utils/rustac-py/compare/v0.8.1...v0.8.2
 [0.8.1]: https://github.com/stac-utils/rustac-py/compare/v0.8.0...v0.8.1
 [0.8.0]: https://github.com/stac-utils/rustac-py/compare/v0.7.2...v0.8.0