chore(release/22.3.0): update changelog

Author: rarquevaux

CHANGELOG.md

@@ -7,9 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [22.3.0]
+
 ### Changed
 
-- Change `client` field type in `SentinelMeta` from `ClientId` enum to `string` for flexible device identification ([#562](https://github.com/MetaMask/smart-transactions-controller/pull/562))
+- Change `client` field type in `SentinelMeta` from `ClientId` enum to `string` for device identification ([#562](https://github.com/MetaMask/smart-transactions-controller/pull/562))
 
 ## [22.2.0]