Illustration migration epic

## If you have an old illustration
1. Start a new thread
2. Write a comment about how to find this page
3. Are there any specific gdk settings required to see this feature
## Do I need a new illustration?
If your illustration doesn't look like ones from [library](https://www.figma.com/file/1ui9w228X0S5WxaD0SRdIA/GitLab-Product-Illustrations?type=design&node-id=441%3A2008&mode=design&t=AeX0hjhcjh1pWrcp-1) and doesn't follow [guidelines](https://design.gitlab.com/product-foundations/illustration), you need a new one!
epic