Privacy: Change `@since` entry for `user_request_confirmed_email_subject` filter added in [43373] to 4.9.8.

Merges [43451] to the 4.9 branch.
Fixes #44382.
Built from https://develop.svn.wordpress.org/branches/4.9@43452


git-svn-id: http://core.svn.wordpress.org/branches/4.9@43279 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/user.php

@@ -2966,6 +2966,7 @@ All at ###SITENAME###
 	 *     @type string          $manage_url  The link to click manage privacy requests of this type.
 	 *     @type string          $sitename    The site name sending the mail.
 	 *     @type string          $siteurl     The site URL sending the mail.
+	 *     @type string          $admin_email The administrator email receiving the mail.
 	 * }
 	 */
 	$content = apply_filters( 'user_confirmed_action_email_content', $email_text, $email_data );
@@ -2988,7 +2989,7 @@ All at ###SITENAME###
 	/**
 	 * Filters the subject of the user request confirmation email.
 	 *
-	 * @since 4.9.7
+	 * @since 4.9.8
 	 *
 	 * @param string $subject    The email subject.
 	 * @param string $blogname   The name of the site.

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9.8-alpha-43450';
+$wp_version = '4.9.8-alpha-43452';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.