Bumped to PHP 7.2 minimum

Author: WyriHaximus

composer.json

@@ -9,15 +9,15 @@
     }
   ],
   "require": {
-    "php": "^7.0",
+    "php": "^7.2",
     "friendsofphp/php-cs-fixer": "^2.5"
   },
   "require-dev": {
     "api-clients/test-utilities": "^4.3"
   },
   "config": {
     "platform": {
-      "php": "7.0"
+      "php": "7.2"
     },
     "sort-packages": true
   },