My 2016 TRD Sport does the same thing. I hear that all 3rd Gen tacomas do it. I have seen on other forums that four runners also do it. Sounds like a huge cricket. It starts after driving for awhile. I was told it was the high pressure fuel pump as well and that it is normal too. Your video doesn’t sound like the high pressure fuel pump squeak it sounds like a knocking. I would question that it is the high pressure fuel pump causing that noise.