Update changelog

Author: rkfg

CHANGELOG.md

@@ -5,6 +5,11 @@ 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).
 
+## [1.12.2]
+### Fixed
+- Payment after probing used the global rebalancing context instead of attempt
+  context which can result in waiting for the payment to fail for too long (6
+  hours by default)
 ## [1.12.1]
 ### Changed
 - Rapid rebalance now goes all the way down to min amount to squeeze all