GCP marketplace wizard is outdated

[tormath1]

Description

When trying to deploy an instance from the GCP Marketplace using the "launch" wizard: it still shows the edge channel and not the lts.

Impact

This is clearly wrong as edge channel does not exist since ages now.

Environment and steps to reproduce

1. Set-up: Go on Flatcar GCP Marketplace page
2. Task: Click on "launch" instance (after accepting the conditions)

Expected behavior

To see lts and not edge

Additional information

https://github.com/kubernetes-sigs/kubespray/issues/12270#issuecomment-2930819567 (https://github.com/kubernetes-sigs/kubespray/issues/12270)