This is **not** the nicest patch of my career, and I know it adds code
duplication. However, I've decided to take this approach in order to
have easier / better instructions for users who're consuming
kata-deploy.
Having both stable & latest yaml on `main` will let us point to just one
place, without having to update the instructions.
I know, would be better to have those generated from a .in file,
wouldn't it? For sure, but then we'd lose the ability to just point to
those files from kata-deploy pages (either on dockerhub or quay.io).
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>