Update changelog

Author: puzrin

CHANGELOG.md

@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [5.2.3] - 2026-08-01
+
+### Fixed
+- Prevent prototype fallback when resolving tags and mapping entries, #782.
+- Resolve `!!timestamp` years 0000-0099 correctly, #775.
+- Preserve implicit null mapping values before document markers and reject
+  unpaired mapping event streams, #784.
+- Preserve folded scalar values with tab-indented lines when round-tripping a
+  parsed AST through `present()`; `dump()` and loading are unaffected, #780.
+
+
 ## [5.2.2] - 2026-07-24
 
 ### Fixed
@@ -682,6 +693,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - First public release
 
 
+[5.2.3]: https://github.com/nodeca/js-yaml/compare/5.2.2...5.2.3
 [5.2.2]: https://github.com/nodeca/js-yaml/compare/5.2.1...5.2.2
 [5.2.1]: https://github.com/nodeca/js-yaml/compare/5.2.0...5.2.1
 [5.2.0]: https://github.com/nodeca/js-yaml/compare/5.1.0...5.2.0