misc: update Changelog

Signed-off-by: Anthony Griffon <[email protected]>

Author: Miaxos

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Feat
+
+-   Bump `async-graphql` to `4`
 
 ## [2.1.0]