Allow PHP ^7.2.5

Author: nicolas-grekas

composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^7.2.9",
+        "php": "^7.2.5",
         "egulias/email-validator": "^2.1.10",
         "psr/log": "~1.0",
         "symfony/event-dispatcher": "^4.4|^5.0",