fix deps

Author: nicolas-grekas

composer.json

@@ -19,16 +19,16 @@
         "php": "^7.1.3",
         "symfony/config": "^4.2",
         "symfony/http-kernel": "^4.3",
-        "symfony/routing": "~3.4.7|~4.0",
+        "symfony/routing": "^4.3",
         "symfony/twig-bundle": "~4.2",
-        "symfony/var-dumper": "~3.4|~4.0",
+        "symfony/var-dumper": "^4.3",
         "twig/twig": "^1.41|^2.10"
     },
     "require-dev": {
-        "symfony/browser-kit": "~3.4|~4.0",
-        "symfony/console": "~3.4|~4.0",
+        "symfony/browser-kit": "^4.3",
+        "symfony/console": "^4.3",
         "symfony/css-selector": "~3.4|~4.0",
-        "symfony/framework-bundle": "~3.4|~4.0",
+        "symfony/framework-bundle": "^4.3",
         "symfony/stopwatch": "~3.4|~4.0"
     },
     "conflict": {