Update workspaces developer README.md with video of testing levels
What does this MR do and why?
Updates workspaces developer README.md with video of testing levels.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Screenshots or screen recordings
N/A
How to set up and validate locally
N/A