Update major Ajv dependencies

https://github.com/ajv-validator/ajv/blob/master/docs/v6-to-v8-migration.md
https://github.com/ajv-validator/ajv-formats

Author: Alkarex

json-multi-schema-validator.js

@@ -6,7 +6,8 @@
  */
 
 //Ajv: Another JSON Schema Validator
-const Ajv = require('ajv');
+const Ajv = require('ajv').default;
+const addFormats = require('ajv-formats').default;
 const util = require('util');
 
 module.exports = RED => {
@@ -21,11 +22,12 @@ module.exports = RED => {
 
 		const jsonCache = require('./json-cache.js')(node);
 
-		const ajv = Ajv({
+		const ajv = new Ajv({
 			allErrors: true,	//TODO: Make a parameter
 			loadSchema: jsonCache.loadAsync,
 			messages: true,	//TODO: Make a parameter
 		});
+		addFormats(ajv);
 
 		//Cache of validators for different schemas
 		const validators = {};

package-lock.json

@@ -1,6 +1,6 @@
 {
 	"name": "node-red-contrib-json-multi-schema",
-	"version": "1.2.6",
+	"version": "1.3.0",
 	"description": "Generic JSON data pipeline tools, with dynamic transformation (using JSONata rules), resolving JSON Schema (using JSONata rules), and then validation (using JSON Schema). For Node-RED and for command-line.",
 	"main": "index.js",
 	"readmeFilename": "readme.md",
@@ -33,7 +33,8 @@
 		"url": "https://github.com/alexandrainst/node-red-contrib-json-multi-schema.git"
 	},
 	"dependencies": {
-		"ajv": "^6.12.6",
+		"ajv": "^8.6.0",
+		"ajv-formats": "^2.1.0",
 		"jsonata": "^1.8.4",
 		"node-fetch": "^2.6.1",
 		"node-red-contrib-mock-cli": "^1.0.10"