Swagger UI is using external resources

[davidgiga1993]

Expected Behavior

When using swagger-ui.enabled=true swagger should be entirely self-contained, not depending on any external resources.

Actual Behaviour

The UI requires external resources, see screenshot below:

This is an issue for multiple reasons:

1. It leaks internal urls to an external CDN
2. unpkg.com is very slow (for whatever reason) causing up to 40 seconds to load

Steps To Reproduce

1. Enable swagger ui: swagger-ui.enabled=true
2. Open swagger-ui and look at the requests

Environment Information

No response

Example Application

No response

Version

3.5.3