Add missing dependencies to composer.json

Author: pplotka

composer.json

@@ -26,7 +26,8 @@
     "php": "^7.1",
     "ext-simplexml": "*",
     "phpstan/phpstan": "^0.11.7",
-    "nikic/php-parser": "^4.0"
+    "nikic/php-parser": "^4.0",
+    "symfony/http-foundation": "^3.0 || ^4.0"
   },
   "require-dev": {
     "consistence/coding-standard": "^3.0.1",