test: change cdn to bootcdn

data/external.yaml

@@ -1,23 +1,23 @@
 Vibrant:
-    - src: https://fastly.jsdelivr.net/npm/node-vibrant@3.1.6/dist/vibrant.min.js
+    - src: https://registry.npmmirror.com/node-vibrant/3.1.6/files/dist/vibrant.min.js
       integrity: sha256-awcR2jno4kI5X0zL8ex0vi2z+KMkF24hUW8WePSA9HM=
       type: script
 
 PhotoSwipe:
-    - src: https://fastly.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.js
+    - src: https://cdn.bootcdn.net/ajax/libs/photoswipe/4.1.3/photoswipe.min.js
       integrity: sha256-ePwmChbbvXbsO02lbM3HoHbSHTHFAeChekF1xKJdleo=
       type: script
       defer: true
 
-    - src: https://fastly.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe-ui-default.min.js
+    - src: https://cdn.bootcdn.net/ajax/libs/photoswipe/4.1.3/photoswipe-ui-default.min.js
       integrity: sha256-UKkzOn/w1mBxRmLLGrSeyB4e1xbrp4xylgAWb3M42pU=
       type: script
       defer: true
 
-    - src: https://fastly.jsdelivr.net/npm/photoswipe@4.1.3/dist/default-skin/default-skin.min.css
+    - src: https://cdn.bootcdn.net/ajax/libs/photoswipe/4.1.3/default-skin/default-skin.min.css
       type: style
 
-    - src: https://fastly.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.css
+    - src: https://cdn.bootcdn.net/ajax/libs/photoswipe/4.1.3/photoswipe.min.css
       type: style
 
 KaTeX: