Add support for Symfony 5

Author: pamil

composer.json

@@ -10,10 +10,10 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.2",
 
         "doctrine/orm": "^2.4",
-        "symfony/property-access": "^3.4|^4.0"
+        "symfony/property-access": "^3.4|^4.4|^5.0"
     },
     "autoload": {
         "psr-4": { "SyliusLabs\\AssociationHydrator\\": "src/" }