Require PHP 5.6.6 to support JSON_PRESERVE_ZERO_FRACTION

Author: Naktibalda

composer.json

@@ -12,7 +12,7 @@
     ],
     "minimum-stability": "RC",
     "require": {
-        "php": ">=5.6.0 <9.0",
+        "php": ">=5.6.6 <9.0",
         "softcreatr/jsonpath": "^0.5 || ^0.7",
         "codeception/codeception": "^4.0",
         "justinrainbow/json-schema": "~5.2.9"