External Libraries: Upgrade backbone to 1.6.1.

This is a minor bugfix release. 

Props vipulgupta003.
Fixes #63763.

git-svn-id: https://develop.svn.wordpress.org/trunk@61686 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

package-lock.json

@@ -74,7 +74,7 @@
 		"webpack": "5.98.0"
 	},
 	"dependencies": {
-		"backbone": "1.6.0",
+		"backbone": "1.6.1",
 		"clipboard": "2.0.11",
 		"codemirror": "5.65.20",
 		"core-js-url-browser": "3.6.4",
@@ -138,4 +138,4 @@
 		"sync-gutenberg-packages": "grunt sync-gutenberg-packages",
 		"postsync-gutenberg-packages": "grunt wp-packages:sync-stable-blocks && grunt build --dev && grunt build"
 	}
-}
+}

package.json

@@ -1060,7 +1060,7 @@ function wp_default_scripts( $scripts ) {
 	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 );
-	$scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore', 'jquery' ), '1.6.0', 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 );
 	did_action( 'init' ) && $scripts->localize(