Merge branch '3.4' into 4.2

* 3.4:
  use UTF-8 instead of utf-8

Author: OskarStark

components/translation/usage.rst

@@ -431,7 +431,7 @@ loaded/dumped when using this component inside a Symfony application:
 
 .. code-block:: xml
 
-    <?xml version="1.0" encoding="utf-8"?>
+    <?xml version="1.0" encoding="UTF-8"?>
     <xliff xmlns="urn:oasis:names:tc:xliff:document:2.0" version="2.0"
            srcLang="fr-FR" trgLang="en-US">
       <file id="messages.en_US">

security/remember_me.rst

@@ -33,7 +33,7 @@ the session lasts using a cookie with the ``remember_me`` firewall option:
     .. code-block:: xml
 
         <!-- config/packages/security.xml -->
-        <?xml version="1.0" encoding="utf-8" ?>
+        <?xml version="1.0" encoding="UTF-8" ?>
         <srv:container xmlns="http://symfony.com/schema/dic/security"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

service_container/tags.rst

@@ -82,7 +82,7 @@ If you want to apply tags automatically for your own services, use the
     .. code-block:: xml
 
         <!-- config/services.xml -->
-        <?xml version="1.0" encoding="utf-8"?>
+        <?xml version="1.0" encoding="UTF-8"?>
         <container xmlns="http://symfony.com/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/services https://symfony.com/schema/dic/services/services-1.0.xsd">
             <services>
                 <!-- this config only applies to the services created by this file -->

workflow/state-machines.rst

@@ -69,7 +69,7 @@ Below is the configuration for the pull request state machine.
     .. code-block:: xml
 
         <!-- config/packages/workflow.xml -->
-        <?xml version="1.0" encoding="utf-8" ?>
+        <?xml version="1.0" encoding="UTF-8" ?>
         <container xmlns="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:framework="http://symfony.com/schema/dic/symfony"

workflow/usage.rst

@@ -68,7 +68,7 @@ like this:
     .. code-block:: xml
 
         <!-- config/packages/workflow.xml -->
-        <?xml version="1.0" encoding="utf-8" ?>
+        <?xml version="1.0" encoding="UTF-8" ?>
         <container xmlns="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:framework="http://symfony.com/schema/dic/symfony"