Bundled Themes: Update copyright year in `readme.txt` for Twenty Twelve and Twenty Twenty.

Follow-up to [46719].

See #48566.
Built from https://develop.svn.wordpress.org/trunk@46720


git-svn-id: http://core.svn.wordpress.org/trunk@46520 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentytwelve/readme.txt

@@ -21,7 +21,7 @@ For more information about Twenty Twelve please go to https://codex.wordpress.or
 
 == Copyright ==
 
-Twenty Twelve WordPress Theme, Copyright 2012-2018 WordPress.org & Automattic.com
+Twenty Twelve WordPress Theme, Copyright 2012-2019 WordPress.org & Automattic.com
 Twenty Twelve is Distributed under the terms of the GNU GPL
 
 This program is free software: you can redistribute it and/or modify

wp-content/themes/twentytwenty/readme.txt

@@ -68,7 +68,7 @@ License URI: http://www.gnu.org/licenses/gpl-2.0.html
 Source: WordPress Social Link Block (See wp-includes\blocks\social-link.php)
 
 Code from Twenty Nineteen
-Copyright (c) 2018 WordPress.org
+Copyright (c) 2018-2019 WordPress.org
 License: GPLv2
 Source: https://wordpress.org/themes/twentynineteen/
 Included as part of the following classes and functions:
@@ -78,7 +78,7 @@ Included as part of the following classes and functions:
 - twentytwenty_nav_menu_social_icons()
 
 Code from Twenty Seventeen
-Copyright (c) 2016 WordPress.org
+Copyright (c) 2016-2019 WordPress.org
 License: GPLv2
 Source: https://wordpress.org/themes/twentyseventeen/
 Included as part of the following classes and functions:

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-46719';
+$wp_version = '5.4-alpha-46720';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.