From my experience keeping workspaces on OneDrive / Gdrive etc. is in general problematic and can lead to corrput workflows etc - that’s why I keep my “offline” and important things I have in my KNIME Hub (Pro or Team Plan). So that’s probably what I’d recommend - on a small scale you could just use your private space that comes with the free hub account…
@mwiegand shared one of his projects in below post, which takes care of backing up / syncing workspaces if I remember correctly: