Upgrade modernizr and jquery

- https://blog.jquery.com/2021/03/02/jquery-3-6-0-released/
- https://github.com/Modernizr/Modernizr/compare/v2.6.2...v2.8.3

CHANGELOG.txt

@@ -42,6 +42,7 @@ Changelog
  * Introduce, `autocomplete`, a separate method which performs partial matching on specific autocomplete fields. This is useful for suggesting pages to the user in real-time as they type their query. (Karl Hobley, Matt Westcott)
  * Use SVG icons in StreamField buttons and headers (Jérôme Lebleu)
  * Add tags to existing Django registered checks (LB Johnston)
+ * Upgrade admin frontend JS libraries jQuery to 3.6.0 and Modernizr to 2.8.3 (Fabien Le Frapper)
  * Fix: Delete button is now correct colour on snippets and modeladmin listings (Brandon Murch)
  * Fix: Ensure that StreamBlock / ListBlock-level validation errors are counted towards error counts (Matt Westcott)
  * Fix: InlinePanel add button is now keyboard navigatable (Jesse Menn)

docs/releases/2.15.rst

@@ -58,6 +58,7 @@ Other features
  * Introduce, ``autocomplete``, a separate method which performs partial matching on specific autocomplete fields. This is useful for suggesting pages to the user in real-time as they type their query. (Karl Hobley, Matt Westcott)
  * Use SVG icons in StreamField buttons and headers (Jérôme Lebleu)
  * Add tags to existing Django registered checks (LB Johnston)
+ * Upgrade admin frontend JS libraries jQuery to 3.6.0 and Modernizr to 2.8.3 (Fabien Le Frapper)
 
 Bug fixes
 ~~~~~~~~~

package.json

@@ -24,7 +24,7 @@
       "node"
     ],
     "moduleNameMapper": {
-      "jquery": "<rootDir>/wagtail/admin/static_src/wagtailadmin/js/vendor/jquery-3.5.1.min.js"
+      "jquery": "<rootDir>/wagtail/admin/static_src/wagtailadmin/js/vendor/jquery-3.6.0.min.js"
     },
     "transform": {
       "^.+\\.(js|ts|tsx)$": "ts-jest"

wagtail/admin/templates/wagtailadmin/admin_base.html

@@ -41,7 +41,7 @@
             };
         })(document, window);
     </script>
-    <script src="{% versioned_static 'wagtailadmin/js/vendor/jquery-3.5.1.min.js' %}"></script>
+    <script src="{% versioned_static 'wagtailadmin/js/vendor/jquery-3.6.0.min.js' %}"></script>
     <script src="{% versioned_static 'wagtailadmin/js/vendor/jquery-ui-1.12.1.min.js' %}"></script>
     <script src="{% versioned_static 'wagtailadmin/js/vendor/jquery.datetimepicker.js' %}"></script>
     <script src="{% versioned_static 'wagtailadmin/js/vendor/jquery.autosize.js' %}"></script>

wagtail/admin/templates/wagtailadmin/skeleton.html

@@ -10,7 +10,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="robots" content="noindex" />
 
-    <script src="{% versioned_static 'wagtailadmin/js/vendor/modernizr-2.6.2.min.js' %}"></script>
+    <script src="{% versioned_static 'wagtailadmin/js/vendor/modernizr-2.8.3.min.js' %}"></script>
 
     <link rel="stylesheet" href="{% versioned_static 'wagtailadmin/css/normalize.css' %}" />