Update CHANGELOG.md

Author: jarnovanleeuwen

CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [0.3.5] - 2020-06-04
 ### Changed
-- Allow Symfony 4 dependency.
+- Allow Symfony 5 dependency.
 
 ## [0.3.4] - 2019-04-05
 ### Fixed