Add changelog entry

Author: pindab0ter

CHANGELOG.md

@@ -6,7 +6,8 @@ All notable changes to this project will be documented in this file.
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 ### Added
-- Add support for Attribute accessors with no backing field or type hinting [#1315 / pindab0ter](https://github.com/barryvdh/laravel-ide-helper/pull/1338).
+- Add support for attribute accessors with no backing field or type hinting [#1315 / pindab0ter](https://github.com/barryvdh/laravel-ide-helper/pull/1338).
+- Add support for attribute accessors marked as protected. [#1339 / pindab0ter](https://github.com/barryvdh/laravel-ide-helper/pull/1339)
 
 2022-03-06, 2.12.3
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