markdown preview loads external dependencies

[floriangantner]

Describe the bug
The markdown preview plugin

dspace-angular/src/app/shared/markdown-viewer/markdown-viewer.component.html

Line 1 in 6b657f5

<nu-markdown-preview [value]="value"></nu-markdown-preview>

loads external dependencies from cdn pages.

To Reproduce
Steps to reproduce the behavior:

1. Call https://dspacecris7.4science.cloud/info/end-user-agreement
2. Check the network connections. dependencies are loaded from the https://www.npmjs.com/package/@ng-util/markdown dependy

Expected behavior
We expect the dependencies being loaded from the site and not from external cdn's.

Related work
Similar issue with google Fonts (removed in 7.6): DSpace#2077

[floriangantner]

fixed in 2023.02.04