add PR to changelog

Author: 45930

CHANGELOG.md

@@ -18,7 +18,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ## [Unreleased](https://github.com/o1-labs/o1js/compare/b857516...HEAD)
 
 ### Changed
-- Sort order for actions now includes the transaction sequence number and the exact account id sequence
+- Sort order for actions now includes the transaction sequence number and the exact account id sequence https://github.com/o1-labs/o1js/pull/1917
 
 ## [2.2.0](https://github.com/o1-labs/o1js/compare/e1bac02...b857516) - 2024-12-10