Detect outdated JavaScript libraries on a CDN

**Is your feature request related to a problem? Please describe.**

I'm auditing an application that uses an insecure version of JQuery. It loads this from a CDN (and uses SRI) - but Dependency Checker doesn't spot it.

**Describe the solution you'd like**

Dependency Checker identifies URLs on a list of common CDN domains and audits the external reference. This might cause some false positives (e.g. URLs within comments) but that would be ok for my purposes.

**Describe alternatives you've considered**

Burp Professional does detect these and I combine the results from Burp with Dependency Checker.