Update component library illustrations (v5 Sketch > v6 Figma)

[bekah-stephens]

Need to update the library of illustrated versions of our components to use on patternfly.org. The current site uses outdated graphics (v5) and the original file is no longer accessible (in Sketch).

Figma

[andrew-ronaldson]

Closed as complete with org follow up
patternfly/patternfly-org#4249