Super-high-tech squids would arrive in Andromeda, but they would be disassembled on microcircuits by super-high-tech creators of Relics. This is if you merge everything into one big picture. Even if you consider the issue differently. Each galaxy has its own dominant race. Do you think that the Reapers, as claimants for the ownership of the galaxy, will not be rebuffed? Given the paucity of available information, limited to only the Heleus Cluster, I dare to assume that behind this cluster there may be other more advanced races (or their ghosts of the past) than the creators of the Relics. By the way, here's another perky question: will the Reapers be able to withstand the effects of the Fel?
The Reapers were originally created by the Leviathans with the aim of preserving organic life in the Milky Way. They are not interested in other galaxies, since they are not inherent in their original problems.
Nothing was mentioned at all about other galaxies in the game. Maybe they acted there too. I think a future game can shed some light on this. However, it seems to me that the Reapers did not take such an active part in the life of Andromeda. First of all, because of the writers, it would be boring, again blame everything on the Reapers, there will probably be other problems.
Anyway, the whole plot was twisted exclusively on the Milky Way. And if we explain from the point of view of the technologies of the races of our galaxy, then none of them have the necessary means to travel to other galaxies, so they cannot find out how things are with the Reapers in Andromeda. In general, you can fantasize about this topic for a very long time, and it's incredibly exciting. I love this universe;)