fix language setting menu

bot/handlers/menu/language.py

@@ -92,5 +92,5 @@ async def set_language(message: CallbackQuery, **kwargs):
     await db_session.commit()
 
     i18n: I18n = kwargs["i18n"]
-    with i18n.use_locale(user.lang):
+    with i18n.use_locale(user.lang.value):
         await route_callback(message, **kwargs)