Update changelog

Author: zguesmi

packages/sharing-smart-contract/CHANGELOG.md

@@ -6,6 +6,8 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 
+- Import Ignition deployment in OZ upgrades plugin (#441)
+- Deploy contracts using Hardhat Ignition (#440)
 - [BREAKING] Remove result proxy url from contract config and deal params (#438).
 - Fix Sharing contract constructor arguments order (#433)
 - Update blockscout url