TinyMCE: update to the TINY-1079 (latest) branch. Fixes several edge cases including the errors thrown when moving the caret with the arrow keys around nested `<a><code>` elements.

Fixes #40874 #40868.
Built from https://develop.svn.wordpress.org/trunk@40848


git-svn-id: http://core.svn.wordpress.org/trunk@40699 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-RC1-40847';
+$wp_version = '4.8-RC1-40848';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
@@ -18,7 +18,7 @@ $wp_db_version = 38590;
  *
  * @global string $tinymce_version
  */
-$tinymce_version = '4602-20170524';
+$tinymce_version = '4602-20170526';
 
 /**
  * Holds the required PHP version