SNOW-811103: Set new Function as default json parser (#635)

lib/global_config.js

@@ -9,11 +9,8 @@ const mkdirp = require('mkdirp');
 const Util = require('./util');
 const Errors = require('./errors');
 const Logger = require('./logger');
-const vm = require('vm');
 const { XMLParser, XMLValidator } = require("fast-xml-parser");
 
-const VM_CONTEXT = vm.createContext() // create a new context so VM does not have to make a new one for each conversion
-
 let insecureConnect = false;
 
 /**
@@ -173,7 +170,7 @@ const rest = {
 exports.rest = rest;
 
 // The default JSON parser
-exports.jsonColumnVariantParser = rawColumnValue => vm.runInContext("(" + rawColumnValue + ")", VM_CONTEXT);
+exports.jsonColumnVariantParser = rawColumnValue => new Function(`return (${rawColumnValue});`)();
 
 /**
  * Updates the value of the 'jsonColumnVariantParser' parameter.