Update version constraint

Author: mvdnbrk

composer.json

@@ -28,7 +28,7 @@
     "require-dev": {
         "nunomaduro/collision": "^4.1",
         "phpunit/phpunit": "^8.0 || ^9.0",
-        "symfony/var-dumper": "^4.0 || ^5.0",
+        "symfony/var-dumper": "^4.4 || ^5.0",
         "vlucas/phpdotenv": "^4.0"
     },
     "config": {