Merge branch '4.4'

* 4.4:
  Deprecate the LoggingMiddleware in Symfony 4.3

Author: javiereguiluz

components/messenger.rst

@@ -78,6 +78,11 @@ are configured for you:
 #. :class:`Symfony\\Component\\Messenger\\Middleware\\SendMessageMiddleware` (enables asynchronous processing, logs the processing of your messages if you pass a logger)
 #. :class:`Symfony\\Component\\Messenger\\Middleware\\HandleMessageMiddleware` (calls the registered handler(s))
 
+.. deprecated:: 4.3
+
+    The ``LoggingMiddleware`` is deprecated since Symfony 4.3 and will be
+    removed in 5.0. Pass a logger to ``SendMessageMiddleware`` instead.
+
 Example::
 
     use App\Message\MyMessage;