I would guess the old definition was deprecated and had to be refreshed by creating a new one. This happened to me earlier this year with Microsoft Teams I believe. But once you recreate it using the new definitions from Jamf, it should continue to work and show new versions as Jamf adds them. If you're finding you have to keep deleting and re-adding the same titles to get the new versions to show, I would open a support case with Jamf, because that's definitely not what's supposed to happen.
