2019 PP2 squeaking noise coming from the back

[Polski]

So, after it got warm outside, my car has a squeaking coming from the back. I can open the trunk, push it down and you can hear a loud squeak, while driving you can hear it on almost any small bump/ Anybody had this issue before?
Going for the first oil change on Monday so I'll tell them to locate where it is coming from, but did anybody have this issue as well?

Thanks!

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