correct changelog date (#400)

Author: timabrmsn

CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 The intended audience of this file is for py42 consumers -- as such, changes that don't affect
 how a consumer would use the library (e.g. adding unit tests, updating documentation, etc) are not captured here.
 
-## 1.16.4 - 2023-01-27
+## 1.16.4 - 2023-02-01
 
 ### Fixed