N°6934 - Symfony 6.4 - upgrade Symfony bundles to 6.4 (#580)

* Update Symfony lib to version ~6.4.0
* Update code missing return type
* Add an iTop general configuration entry to store application secret (Symfony mandatory parameter)
* Use dependency injection in ExceptionListener & UserProvider classes

lib/symfony/css-selector/Parser/TokenStream.php

@@ -29,34 +29,23 @@ class TokenStream
     /**
      * @var Token[]
      */
-    private $tokens = [];
+    private array $tokens = [];
 
     /**
      * @var Token[]
      */
-    private $used = [];
+    private array $used = [];
 
-    /**
-     * @var int
-     */
-    private $cursor = 0;
-
-    /**
-     * @var Token|null
-     */
-    private $peeked;
-
-    /**
-     * @var bool
-     */
-    private $peeking = false;
+    private int $cursor = 0;
+    private ?Token $peeked;
+    private bool $peeking = false;
 
     /**
      * Pushes a token.
      *
      * @return $this
      */
-    public function push(Token $token): self
+    public function push(Token $token): static
     {
         $this->tokens[] = $token;
 
@@ -68,7 +57,7 @@ class TokenStream
      *
      * @return $this
      */
-    public function freeze(): self
+    public function freeze(): static
     {
         return $this;
     }
@@ -156,7 +145,7 @@ class TokenStream
     /**
      * Skips next whitespace if any.
      */
-    public function skipWhitespace()
+    public function skipWhitespace(): void
     {
         $peek = $this->getPeek();