Even though Google has a long history of killing their products I doubt they’d do it to Google Drive anytime soon. You could upload it there and make it publicly available. Proton Drive is newer and preferred by a lot of people for numerous reasons. It has a 5GB limit. You could probably use that.
I feel like the key is having at least one other place where it is in the event one service dies.
That said there are paid services out there that would likely keep your files indefinitely and are unlikely to shutdown anytime soon.
Google would likely be the subject of several lawsuits from other companies big enough to damages them if they just suddenly pulled the plug on Drive without an off ramp time. So even if one was worried, they’d have to have time to move the files somewhere else.