Potentially a direct hit from a GRB few kiloparsecs away would cause issues, but for extinction level events the GRB needs to be a lot closer.
This doesn't seem to be a GRB. It's more likely to be a magnetar, and at this distance there's nothing at all to worry about.
The concept of anything a light year away or more being able to wipe out life on Earth is pretty mind-boggling to me. I wish we focused more on things that were mind-boggling rather than mind killing. But that's just not how this culture is playing out.