Updates CHANGELOG

Author: jqno

CHANGELOG.md

@@ -14,6 +14,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- `#withResettablePrefabValues()` method to supply values that won't be cached, and that will be re-initialized on each separate test performed by EqualsVerifier. ([Issue 1117](https://github.com/jqno/equalsverifier/issues/1117))
+
 ### Changed
 
 - Records with a constructor that changes a parameter's value are now allowed.