Aliens of a sort, but not aliens as you know them, Jim.
It will be found by our intellectual descendants. Intelligences that were initially created by us, but which became so remotely removed through the passage of time that they no longer resemble any form of human intellect. At least not at the higher intellectual levels.
They will pick it up for study becasue they will be curious about examining any last remains that points towards their distant origins.
Much in the same way we study the fossils of creatures for clues about our own origins. But not fossil ape like creatures from a mere few millions of yeas ago, nor even the reptiles or amphibians that preceded them tens of millions years before that. That is far too recent.
The ancient fish from 100's of millions of years ago then? Those specific fish which swam in Silurian seas from which we, as humans, are directly descended?
Haha. No. Still too recent. Far too close.
A closer analogy would be the first single celled animals, eukaryotes, that inhabited the ancestral seas a billion years ago.
That would be the sort of intellectual gulf between those who finally track down and examine the Voyager and those who launched it.
But these distant intellects of the future, they still would kith and kin, wouldn't they, no matter how remote? Surely they would still retain some sort of humanity? Well, I guess you could say that, in a manner of speaking, as a testimony to their origin. But then, to be pragmatic, how closely do you you consider yourself related on any level, either biologically or intellectually, to the single celled organisms that swim around in the pond water at the local park? Despite the fact that they are your distant cousins.