Issue #2559299 by tarekdj, vprocessor: Update JS lib: backbone to 1.2.3

core/core.libraries.yml

@@ -2,10 +2,10 @@
 
 backbone:
   remote: https://github.com/jashkenas/backbone
-  version: "1.2.1"
+  version: "1.2.3"
   license:
     name: MIT
-    url: https://github.com/jashkenas/backbone/blob/1.2.1/LICENSE
+    url: https://github.com/jashkenas/backbone/blob/1.2.3/LICENSE
     gpl-compatible: true
   js:
     assets/vendor/backbone/backbone-min.js: { weight: -19, minified: true }

core/modules/system/src/Tests/Common/AttachedAssetsTest.php

@@ -288,7 +288,7 @@ function testVersionQueryString() {
     $js_render_array = \Drupal::service('asset.js.collection_renderer')->render($js);
 
     $rendered_js = $this->renderer->renderPlain($js_render_array);
-    $this->assertTrue(strpos($rendered_js, 'core/assets/vendor/backbone/backbone-min.js?v=1.2.1') > 0 && strpos($rendered_js, 'core/assets/vendor/domready/ready.min.js?v=1.0.8') > 0 , 'JavaScript version identifiers correctly appended to URLs');
+    $this->assertTrue(strpos($rendered_js, 'core/assets/vendor/backbone/backbone-min.js?v=1.2.3') > 0 && strpos($rendered_js, 'core/assets/vendor/domready/ready.min.js?v=1.0.8') > 0 , 'JavaScript version identifiers correctly appended to URLs');
   }
 
   /**