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/web-profiler-bundle/Resources/views/Icon/translation.svg

@@ -1 +1,8 @@
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+<svg xmlns="http://www.w3.org/2000/svg" data-icon-name="icon-tabler-language-hiragana" width="24" height="24" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+    <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
+    <path d="M4 5h7"></path>
+    <path d="M7 4c0 4.846 0 7 .5 8"></path>
+    <path d="M10 8.5c0 2.286 -2 4.5 -3.5 4.5s-2.5 -1.135 -2.5 -2c0 -2 1 -3 3 -3s5 .57 5 2.857c0 1.524 -.667 2.571 -2 3.143"></path>
+    <path d="M12 20l4 -9l4 9"></path>
+    <path d="M19.1 18h-6.2"></path>
+</svg>