Merge branch '5.3' into 5.4

* 5.3:
  [DependencyInjection] only allow `ReflectionNamedType` for `ServiceSubscriberTrait`
  Fix CS
  [Intl] Update the ICU data to 70.1
  Default access_decision_manager.strategy option with merge.

Signed-off-by: Alexander M. Turek <me@derrabus.de>

Loader/MoFileLoader.php

@@ -22,13 +22,13 @@ class MoFileLoader extends FileLoader
      * Magic used for validating the format of an MO file as well as
      * detecting if the machine used to create that file was little endian.
      */
-    public const MO_LITTLE_ENDIAN_MAGIC = 0x950412de;
+    public const MO_LITTLE_ENDIAN_MAGIC = 0x950412DE;
 
     /**
      * Magic used for validating the format of an MO file as well as
      * detecting if the machine used to create that file was big endian.
      */
-    public const MO_BIG_ENDIAN_MAGIC = 0xde120495;
+    public const MO_BIG_ENDIAN_MAGIC = 0xDE120495;
 
     /**
      * The size of the header of an MO file in bytes.