Merge pull request Sylius#108 from pamil/1.1-phpspec-4.0

Use PhpSpec ^4.0

Author: pamil

composer.json

@@ -20,7 +20,7 @@
         "friends-of-behat/symfony-extension": "^1.0",
         "friends-of-behat/variadic-extension": "^1.0",
         "lakion/mink-debug-extension": "^1.2.3",
-        "phpspec/phpspec": "^3.2",
+        "phpspec/phpspec": "^4.0",
         "phpstan/phpstan-shim": "^0.9.2",
         "phpunit/phpunit": "^6.5",
         "sylius-labs/coding-standard": "^2.0"