[Merge] ~hsbasu/update-manager:fix-download-page into update-manager:main

[Himadri Sekhar Basu]

> Would someone please prepare the changelog so that this can be uploaded?

Hi Graham! The last debian version in main branch is 1:24.04.6. Should I add this MR to this version or should I increase the version to 1:24.04.7?
-- 
https://code.launchpad.net/~hsbasu/update-manager/+git/update-manager/+merge/465575
Your team Ubuntu Core Development Team is subscribed to branch update-manager:main.