Update changelog

Author: dunglas

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## 2.2.4
+
+* Fix a BC break preventing to pass non-arrays to the builtin Symfony normalizers when using custom normalizers
+* Fix a bug a bug when using `FilterEagerLoadingExtension` with manual joins
+* Fix some bugs in the AWS API Gateway compatibility mode for Open API/Swagger
+
 ## 2.2.3
 
 * Fix object state inconsistency after persistence