Merge branch '5.4' into 6.3

* 5.4:
  Revert "Fix the installation instructions of symfony/psr-http-message-bridge"

Author: javiereguiluz

components/psr7.rst

@@ -10,7 +10,7 @@ Installation
 
 .. code-block:: terminal
 
-    $ composer require symfony/psr-http-message-bridge:^2.3
+    $ composer require symfony/psr-http-message-bridge
 
 .. include:: /components/require_autoload.rst.inc