General: Add missing `@since` annotation for `wp_get_direct_php_update_url()`.

Missed in [44815].

Props birgire.
See #46074.
Built from https://develop.svn.wordpress.org/trunk@44829


git-svn-id: http://core.svn.wordpress.org/trunk@44661 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/functions.php

@@ -6825,6 +6825,8 @@ function wp_update_php_annotation() {
  * by using the {@see 'wp_direct_php_update_url'} filter. This allows hosts to send users directly to
  * the page where they can update PHP to a newer version.
  *
+ * @since 5.1.1
+ *
  * @return string URL for directly updating PHP or empty string.
  */
 function wp_get_direct_php_update_url() {

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-alpha-44828';
+$wp_version = '5.2-alpha-44829';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.