Only if the sanctions are warranted by ethics. Which they are not, in this case - there isn't anything online I can find which supports sanctioning this specific company.
This is a repeating pattern in this conflict: even without substantial or even circumstantial proof that a russian company benefits from or at least tolerates the war, in the event Ukraine tells us to sanction the respective company, we have to obey or else.
What do we expect? Should all russian companies shut down because of the war? Would this be what we expect from all western companies, like when we attacked Iraq because of Weapons of Mass Destruction?
This is slowly really getting ridiculous. Even more so if this opens up an attack vector from even more non-friendlies because of an orphaned github account.