Squeaking rear noise when going over speed bumps.

So I noticed some squeaking for the rear when going over speed bumps. I took it to the mechanic and I wasn’t able to reproduce it there. They looked at my suspension and said everything checks out. I went back home and decided to bounce the rear end myself and got a video of the noise. Anyone know what this sound could be? Maybe just needs some lubrication? Here’s a video: thanks
https://youtube.com/shorts/_EsFTbkHEQ4?feature=share

 

Just the way it bounces, Im gonna guess the shocks and rear bushings are worn out and created the squeaky noise. On my Nissan truck it gave the same noise. Once new rear shocks were replace, noise was gone.

 

Ok good to know I’m gonna take it to the dealer since it’s still under warranty, I’m hoping it’s just some dry components.