⬆️ 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We were on v3 that is no longer maintained and compatibility is annonced for PHP 7.2.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/Builder/Function_.php

@@ -1,22 +1,23 @@
-<?php
+<?php declare(strict_types=1);
 
 namespace PhpParser\Builder;
 
 use PhpParser;
+use PhpParser\BuilderHelpers;
 use PhpParser\Node;
 use PhpParser\Node\Stmt;
 
 class Function_ extends FunctionLike
 {
     protected $name;
-    protected $stmts = array();
+    protected $stmts = [];
 
     /**
      * Creates a function builder.
      *
      * @param string $name Name of the function
      */
-    public function __construct($name) {
+    public function __construct(string $name) {
         $this->name = $name;
     }
 
@@ -28,7 +29,7 @@ class Function_ extends FunctionLike
      * @return $this The builder instance (for fluid interface)
      */
     public function addStmt($stmt) {
-        $this->stmts[] = $this->normalizeNode($stmt);
+        $this->stmts[] = BuilderHelpers::normalizeStmt($stmt);
 
         return $this;
     }
@@ -38,12 +39,12 @@ class Function_ extends FunctionLike
      *
      * @return Stmt\Function_ The built function node
      */
-    public function getNode() {
-        return new Stmt\Function_($this->name, array(
+    public function getNode() : Node {
+        return new Stmt\Function_($this->name, [
             'byRef'      => $this->returnByRef,
             'params'     => $this->params,
             'returnType' => $this->returnType,
             'stmts'      => $this->stmts,
-        ), $this->attributes);
+        ], $this->attributes);
     }
 }