Update CHANGELOG for auto-release v0.5.0

Author: GitHub Bot

CHANGELOG.md

@@ -2,4 +2,10 @@
 
 ## [Unreleased]
 
-- [ENH] Enable callbacks for pandas DataFrame and Series accessors. (@asmirnov69)
+## [v0.5.0] - 2023-02-03
+
+-   [ENH] Enable callbacks for pandas DataFrame and Series accessors. (@asmirnov69)
+
+[Unreleased]: https://github.com/pyjanitor-devs/pandas_flavor/compare/v0.5.0...HEAD
+
+[v0.5.0]: https://github.com/pyjanitor-devs/pandas_flavor/compare/844c5bc9bebf235bd4534badc07c0153dd01cba0...v0.5.0