update minimal php requirement to the 7.1

saimaz · saimaz · commit 036b297d96eb · 2019-10-08T13:34:22.000+03:00
diff --git a/composer.json b/composer.json
@@ -11,7 +11,7 @@
         }
     ],
     "require": {
-        "php": "^7.0",
+        "php": "^7.1",
         "symfony/serializer": "^3.0|^4.0",
         "paragonie/random_compat": "*"
     },
