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/psr/cache/src/CacheItemInterface.php

@@ -32,7 +32,7 @@ interface CacheItemInterface
      * @return string
      *   The key string for this cache item.
      */
-    public function getKey();
+    public function getKey(): string;
 
     /**
      * Retrieves the value of the item from the cache associated with this object's key.
@@ -46,7 +46,7 @@ interface CacheItemInterface
      * @return mixed
      *   The value corresponding to this cache item's key, or null if not found.
      */
-    public function get();
+    public function get(): mixed;
 
     /**
      * Confirms if the cache item lookup resulted in a cache hit.
@@ -57,7 +57,7 @@ interface CacheItemInterface
      * @return bool
      *   True if the request resulted in a cache hit. False otherwise.
      */
-    public function isHit();
+    public function isHit(): bool;
 
     /**
      * Sets the value represented by this cache item.
@@ -72,12 +72,12 @@ interface CacheItemInterface
      * @return static
      *   The invoked object.
      */
-    public function set($value);
+    public function set(mixed $value): static;
 
     /**
      * Sets the expiration time for this cache item.
      *
-     * @param \DateTimeInterface|null $expiration
+     * @param ?\DateTimeInterface $expiration
      *   The point in time after which the item MUST be considered expired.
      *   If null is passed explicitly, a default value MAY be used. If none is set,
      *   the value should be stored permanently or for as long as the
@@ -86,7 +86,7 @@ interface CacheItemInterface
      * @return static
      *   The called object.
      */
-    public function expiresAt($expiration);
+    public function expiresAt(?\DateTimeInterface $expiration): static;
 
     /**
      * Sets the expiration time for this cache item.
@@ -101,5 +101,5 @@ interface CacheItemInterface
      * @return static
      *   The called object.
      */
-    public function expiresAfter($time);
+    public function expiresAfter(int|\DateInterval|null $time): static;
 }