Update changelog

Author: sforward

CHANGELOG.md

@@ -11,6 +11,9 @@ All notable changes to this project will be documented in this file.
 - Fix issue where \Eloquent is not included when using write_mixin [#1352 / Jefemy](https://github.com/barryvdh/laravel-ide-helper/pull/1352)
 - Fix model factory method arguments for Laravel >= 9 [#1361 / wimski](https://github.com/barryvdh/laravel-ide-helper/pull/1361)
 
+### Added
+- Add support for custom casts that implement `CastsInboundAttributes` [#1329 / sforward](https://github.com/barryvdh/laravel-ide-helper/pull/1329)
+
 2022-03-06, 2.12.3
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