Change the cdn used with the SlideAtlas viewer.

This was one of the primary causes of transient client test failures.
We should check if anyone actually uses this, and, if not, remove it
from the default viewer list.

CHANGELOG.md

@@ -5,6 +5,9 @@
 ### Features
 - Added a noCache option to opening tile sources ([#1296](../../pull/1296))
 
+### Changes
+- Changed the cdn used for the SlideAtlas viewer ([#1297](../../pull/1297))
+
 ## 1.23.7
 
 ### Improvements

girder/girder_large_image/web_client/views/imageViewerWidget/slideatlas.js

@@ -5,7 +5,8 @@ import {parseQueryString, splitRoute} from '@girder/core/misc';
 
 import ImageViewerWidget from './base';
 
-var baseSAUrl = 'https://unpkg.com/[email protected]/dist/';
+// var baseSAUrl = 'https://unpkg.com/[email protected]/dist/';
+var baseSAUrl = 'https://cdn.jsdelivr.net/npm/slideatlas-viewer@4/dist/';
 
 var SlideAtlasImageViewerWidget = ImageViewerWidget.extend({
     initialize: function (settings) {