⬆️ Upgrade lib : nikic/php-parser

We were on v3 that is no longer maintained and compatibility is annonced for PHP 7.2.
v4 is active and supports PHP up to 8.0
No problem to update as this is only used in the config editor (\Combodo\iTop\Config\Validator\iTopConfigAstValidator)

lib/nikic/php-parser/lib/PhpParser/Node/Expr/Array_.php

@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 namespace PhpParser\Node\Expr;
 
@@ -10,21 +10,25 @@ class Array_ extends Expr
     const KIND_LONG = 1;  // array() syntax
     const KIND_SHORT = 2; // [] syntax
 
-    /** @var ArrayItem[] Items */
+    /** @var (ArrayItem|null)[] Items */
     public $items;
 
     /**
      * Constructs an array node.
      *
-     * @param ArrayItem[] $items      Items of the array
+     * @param (ArrayItem|null)[] $items      Items of the array
      * @param array       $attributes Additional attributes
      */
-    public function __construct(array $items = array(), array $attributes = array()) {
-        parent::__construct($attributes);
+    public function __construct(array $items = [], array $attributes = []) {
+        $this->attributes = $attributes;
         $this->items = $items;
     }
 
-    public function getSubNodeNames() {
-        return array('items');
+    public function getSubNodeNames() : array {
+        return ['items'];
+    }
+    
+    public function getType() : string {
+        return 'Expr_Array';
     }
 }