Code review comment for lp:~sil2100/update-manager/ignore_prompt_lts_for_non-lts

Ok, so leaving this as is - will you merge it once you have a moment today?

I can provide a dep addition to ubuntu-release-upgrader although I personally don't think it's needed. I didn't do it before as python3-distupgrade already depends on python3-update-manager, which after this merge lands will be pulling in the dependency of distro-info already. But I can understand if you want to add an explicit dep for clarity though.