Update whitelist in PHPStan

Author: Jérôme Deuchnord

phpstan.neon

@@ -1,6 +1,7 @@
 parameters:
     inferPrivatePropertyTypeFromConstructor: true
     ignoreErrors:
-    - '#Call to an undefined method Symfony\\Component\\Config\\Definition\\Builder\\NodeDefinition::children\(\)\.#'
     # BC layer
     - '#Call to function method_exists\(\).*getRootNode. will always evaluate to false\.#'
+    - '#Class Symfony\\Component\\Config\\Definition\\Builder\\TreeBuilder constructor invoked with 0 parameters, 1-3 required\.#'
+    - '#Call to an undefined method Symfony\\Component\\Config\\Definition\\Builder\\TreeBuilder::root\(\)\.#'