update changelog

CHANGELOG.md

@@ -45,13 +45,13 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* [#12589](https://github.com/cosmos/cosmos-sdk/pull/12589) Allow zero gas in simulation mode.
 * [#12576](https://github.com/cosmos/cosmos-sdk/pull/12576) Remove dependency on cosmos/keyring and upgrade to 99designs/keyring v1.2.1
 * [#12089](https://github.com/cosmos/cosmos-sdk/pull/12089) Mark the `TipDecorator` as beta, don't include it in simapp by default.
 * [#12153](https://github.com/cosmos/cosmos-sdk/pull/12153) Add a new `NewSimulationManagerFromAppModules` constructor, to simplify simulation wiring.
 * [#12187](https://github.com/cosmos/cosmos-sdk/pull/12187) Add batch operation for x/nft module.
 * [#12453](https://github.com/cosmos/cosmos-sdk/pull/12453) Add `NewInMemoryWithKeyring` function which allows the creation of in memory `keystore` instances with a specified set of existing items.
 * [#11390](https://github.com/cosmos/cosmos-sdk/pull/11390) `LatestBlockResponse` & `BlockByHeightResponse` types' `Block` filed has been deprecated and they now contains new field `sdk_block` with `proposer_address` as `string`
-* [#12589](https://github.com/cosmos/cosmos-sdk/pull/12589) Allow zero gas in simulation mode.
 
 ### State Machine Breaking