Marketing: learn using @hashicorp/flight-icons

[amyrlam]

Follow-up from #60, get team looped in on Kendall / Brayden's upcoming PR on https://github.com/hashicorp/learn

[amyrlam]

Here's the PR from Kendall, taking a look at it now and will tag folks there https://github.com/hashicorp/learn/pull/3805

[amyrlam]

• TODO: update PR https://learn-git-kscard-updates-hashicorp.vercel.app/components?component=Card and https://learn-git-kscard-updates-hashicorp.vercel.app/components?component=MetadataIcon but with right vercel link

[amyrlam]

moved all the statuses here https://github.com/hashicorp/design-systems-team/pull/30, just dm'd kendall and brayden and i'll sync up with them more next week when i'm back on wed.