External Libraries: Update underscore to 1.13.8.

A full list of changes can be found on GitHub: jashkenas/underscore@1.13.7...1.13.8.

Props jonsurrell.
Fixes #64891.

git-svn-id: https://develop.svn.wordpress.org/trunk@62060 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

package-lock.json

@@ -107,7 +107,7 @@
 		"react-dom": "18.3.1",
 		"react-is": "18.3.1",
 		"regenerator-runtime": "0.14.1",
-		"underscore": "1.13.7",
+		"underscore": "1.13.8",
 		"whatwg-fetch": "3.6.20",
 		"wicg-inert": "3.1.3"
 	},

package.json

@@ -1063,7 +1063,7 @@ function wp_default_scripts( $scripts ) {
 	$scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2015-05-03' );
 	did_action( 'init' ) && $scripts->add_data( 'json2', 'conditional', '_required-conditional-dependency_' );
 
-	$scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.13.7', 1 );
+	$scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.13.8', 1 );
 	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore', 'jquery' ), '1.6.1', 1 );
 
 	$scripts->add( 'wp-util', "/wp-includes/js/wp-util$suffix.js", array( 'underscore', 'jquery' ), false, 1 );