Upgrade dependencies, modernize some code

BREAKING CHANGE: move to latest version of parser

Author: jonluca

lib/index.js

@@ -3,13 +3,11 @@
 
 const validateSchema = require("./validators/schema");
 const validateSpec = require("./validators/spec");
-const { jsonSchemaParserNormalizeArgs: normalizeArgs } = require("@apidevtools/json-schema-ref-parser");
+const { jsonSchemaParserNormalizeArgs: normalizeArgs, dereferenceInternal: dereference, $RefParser } = require("@apidevtools/json-schema-ref-parser");
 const util = require("./util");
 const Options = require("./options");
 const maybe = require("call-me-maybe");
 const { ono } = require("@jsdevtools/ono");
-const { $RefParser } = require("@apidevtools/json-schema-ref-parser");
-const { dereferenceInternal: dereference } = require("@apidevtools/json-schema-ref-parser");
 
 const supported31Versions = ["3.1.0", "3.1.1"];
 const supported30Versions = ["3.0.0", "3.0.1", "3.0.2", "3.0.3", "3.0.4"];