If you need to add more items to the CSP go to the line 36 and add more items inside the object.
Here I used as an example the font-src. In this case I just needed to add 1 more URL, so I added a string to the font-src key.
If you need to add more than 1 item you can use the value as an array. Also, if you need to add more keys, just add it to the object, like this:
updateContentSecurityPolicy(definitions, {