fix(a11y): focus modals on open and update privatebin.js SRI

- Load-confirm modal: focus primary action on show
- Email-confirm modal: focus UTC button on show (safer default)
- Update SRI for js/privatebin.js in Configuration.php

Fixes #1801

js/privatebin.js

@@ -2317,6 +2317,10 @@ jQuery.PrivateBin = (function($) {
             $loadconfirmClose.off('click.close');
             $loadconfirmClose.on('click.close', Controller.newPaste);
 
+            $loadconfirmmodal.on('shown.bs.modal', () => {
+                $loadconfirmOpenNow.trigger('focus');
+            });
+
             if (typeof bootstrap !== 'undefined' && bootstrap.Tooltip.VERSION) {
                 (new bootstrap.Modal($loadconfirmmodal[0])).show();
             } else {
@@ -4193,6 +4197,10 @@ jQuery.PrivateBin = (function($) {
                     triggerEmailSend(emailBody);
                 }
 
+                $emailconfirmmodal.on('shown.bs.modal', () => {
+                    $emailconfirmTimezoneUtc.trigger('focus');
+                });
+
                 $emailconfirmTimezoneCurrent.off('click.sendEmailCurrentTimezone');
                 $emailconfirmTimezoneCurrent.on('click.sendEmailCurrentTimezone', sendEmailAndHideModal);
                 $emailconfirmTimezoneUtc.off('click.sendEmailUtcTimezone');

lib/Configuration.php

@@ -122,7 +122,7 @@ class Configuration
             'js/kjua-0.10.0.js'      => 'sha512-BYj4xggowR7QD150VLSTRlzH62YPfhpIM+b/1EUEr7RQpdWAGKulxWnOvjFx1FUlba4m6ihpNYuQab51H6XlYg==',
             'js/legacy.js'           => 'sha512-RQEo1hxpNc37i+jz/D9/JiAZhG8GFx3+SNxjYnI7jUgirDIqrCSj6QPAAZeaidditcWzsJ3jxfEj5lVm7ZwTRQ==',
             'js/prettify.js'         => 'sha512-puO0Ogy++IoA2Pb9IjSxV1n4+kQkKXYAEUtVzfZpQepyDPyXk8hokiYDS7ybMogYlyyEIwMLpZqVhCkARQWLMg==',
-            'js/privatebin.js'       => 'sha512-/IEJKCrmYXO6DJF1/vjiwl/bJTykFJQvYy7FlAJRwf3vhaeI6C0T60w8gIDBBYsfDK54PSKSU3zDN6fU33flPg==',
+            'js/privatebin.js'       => 'sha512-U52jFm7xsPJsJ7M/sFF6GoEBLTQ4pcvNDN5z3JcH0P2xHokiV3YrhfSi6XgTnBANdnjAXmg9GfJf3Bs2yKAiug==',
             'js/purify-3.4.1.js'     => 'sha512-280a/Vb6fVFsYaeRrkuDp4EDmdYlt2XS+dlDEO/U9qljPrAraA2bIzHTNmP+9dpwPDDwTML+RS+h5iaagPwTzA==',
             'js/showdown-2.1.0.js'   => 'sha512-WYXZgkTR0u/Y9SVIA4nTTOih0kXMEd8RRV6MLFdL6YU8ymhR528NLlYQt1nlJQbYz4EW+ZsS0fx1awhiQJme1Q==',
             'js/zlib-1.3.2.js'       => 'sha512-RAhJgxg9siMIA8ky4c10Rc2zUgnK80olHB8Tt1IOYWY4Eh1WmrviQkDn+sgBlb38ZHq3tzufGC41kP360gmosQ==',