update changelog

Author: beakerandjake

CHANGELOG.md

@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 - Added support for 2023 to the config file ([#226](https://github.com/beakerandjake/advent-of-code-runner/issues/226))
+### Fixed
+- Fix number of solvable problems to be 49 not 50 (day 25 only has one level) ([#224](https://github.com/beakerandjake/advent-of-code-runner/issues/224))
+
 
 ## [1.3.6] - 2023-08-23
 ### Fixed