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/http-kernel/Log/DebugLoggerInterface.php

@@ -23,11 +23,15 @@ interface DebugLoggerInterface
     /**
      * Returns an array of logs.
      *
-     * A log is an array with the following mandatory keys:
-     * timestamp, message, priority, and priorityName.
-     * It can also have an optional context key containing an array.
-     *
-     * @return array
+     * @return array<array{
+     *     channel: ?string,
+     *     context: array<string, mixed>,
+     *     message: string,
+     *     priority: int,
+     *     priorityName: string,
+     *     timestamp: int,
+     *     timestamp_rfc3339: string,
+     * }>
      */
     public function getLogs(Request $request = null);
 
@@ -40,6 +44,8 @@ interface DebugLoggerInterface
 
     /**
      * Removes all log records.
+     *
+     * @return void
      */
     public function clear();
 }