Update composer.json

There was symfony problems from older version of packages . fixed with an repo forked from jonnyw/php-phatomjs and replaced symfony version from 3 to 4.

Author: mrjosh

composer.json

@@ -26,7 +26,7 @@
  "require": {
  "php": "^7.1",
  "laravel/framework": "^5",
- "jonnyw/php-phantomjs": "^4"
+ "josh/php-phantomjs": "^4"
  },
  "require-dev": {
  "phpunit/phpunit": "^7.0"