Update CHANGELOG.md

Author: crodriguezvega

CHANGELOG.md

@@ -34,25 +34,17 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 # Changelog
 
-## [Unreleased]
+## [v7.2.0](https://github.com/cosmos/ibc-go/releases/tag/v7.1.0) - 2023-06-22
 
 ### Dependencies
 
 * [\#3810](https://github.com/cosmos/ibc-go/pull/3810) Update Cosmos SDK to v0.47.3.
 * [\#3862](https://github.com/cosmos/ibc-go/pull/3862) Update CometBFT to v0.37.2.
 
-### API Breaking
-
 ### State Machine Breaking
 
 * [\#3907](https://github.com/cosmos/ibc-go/pull/3907) Re-implemented missing functions of `LegacyMsg` interface to fix transaction signing with ledger.
 
-### Improvements
-
-### Features
-
-### Bug Fixes
-
 ## [v7.1.0](https://github.com/cosmos/ibc-go/releases/tag/v7.1.0) - 2023-06-09 
 
 ### Dependencies