Update CHANGELOG.md

Author: cicirello

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [Unreleased] - 2023-08-07
+## [Unreleased] - 2025-05-15
 
 ### Added
 
@@ -21,6 +21,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Other
 
 
+## [3.1.6] - 2025-05-15
+
+### Other
+* Migrated deployment from the old OSSRH to the new Central.
+
+
 ## [3.1.5] - 2023-08-07
 
 ### Fixed