Prepare release 3.5.4

Author: ste93cry

CHANGELOG.md

@@ -5,9 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
- - Fix deprecations triggered by Symfony 5.3 (#490)
 
-## 3.5.4
+## 3.5.4 (2021-05-13)
+ - Fix deprecations triggered by Symfony 5.3 (#490, thanks to @derrabus)
  - CLI commands registration policy changed to lazy load (#373, thanks to @kefzce)
  - Escape release option if it contains a `/` (#371, thanks to @VincentLanglet)