Fix dependencies after merge

Author: Rafael Pires

composer.json

@@ -19,9 +19,9 @@
   },
   "require": {
     "php": ">=5.5",
-    "twig/twig": "~2.0",
-    "symfony/symfony": "^4.0",
-    "symfony/form": "^3.0|^4.0"
+    "symfony/symfony": "4.4.18",
+    "symfony/form": "^4.0",
+    "twig/twig": "1.42.2"
   },
   "require-dev": {
     "phpunit/phpunit": "^8",