Update `since` annotation for `wp_insert_term_duplicate_check` filter.

Originally added in [43570].

Props audrasjb.
Fixes #43271.
Built from https://develop.svn.wordpress.org/trunk@44372


git-svn-id: http://core.svn.wordpress.org/trunk@44202 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/taxonomy.php

@@ -2295,7 +2295,7 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) {
 	 * to be created. Plugins with different uniqueness requirements may use this filter
 	 * to bypass or modify the duplicate-term check.
 	 *
-	 * @since 5.0.0
+	 * @since 5.1.0
 	 *
 	 * @param object $duplicate_term Duplicate term row from terms table, if found.
 	 * @param string $term           Term being inserted.

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-44371';
+$wp_version = '5.1-alpha-44372';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.