Update changelog

Author: matthewwalsh0

packages/transaction-controller/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Include gas limit and gas fees in simulation requests ([#5754](https://github.com/MetaMask/core/pull/5754))
+
 ### Fixed
 
 - Fix `addTransaction` function to correctly identify a transaction as a `simpleSend` type when the recipient is a smart account ([#5822](https://github.com/MetaMask/core/pull/5822))