add youtube videos, links between pt1 and pt2 for ci/cd aws github ac…

[shughes26]

…tions workshops

Proposed changes

https://github.com/pulumi/marketing/issues/1120

Unreleased product version (optional)

Related issues (optional)

[pulumi-bot]

Your site preview for commit 4e06b4ea is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12954-4e06b4ea.s3-website.us-west-2.amazonaws.com.

[SaraDPH]

@shughes26 can you add the link to the source code to

This workshop is taught with Pulumi Cloud. Sign up for free and get the source code to follow along