It seems URP leaks memory. I have created a windows player with 6000.0.0b11 and started it with -native-leak-detection EnabledWithStackTrace and it found:
“Leak Detected : Persistent allocates 720 individual allocations”
I have attached a text file with the stacktrace of two leaks. Is this a known issue?
9705737–1386179–leaks.txt (7.25 KB)
What settings do you have for your build player and your graphics renderer asset out of curiosity? Main reason for asking, I noticed these are in the library/bee/artifacts folder out of all things.
Build Settings 
URP Pipeline Asset 
URP Forward Renderer 
I got a project that I use for testing purposes for 3D URP. Going to try out some of these settings and see if I can find it. Due to how each project differs from use to use I might not end up running into the same feature you use that is causing the memory leak, but worth a shot.
Okay so within a few minutes of the last post I created a new project for a clean debugging environment and noticed something. I am assuming you should have the Collections Package installed as a dependency of URP 17.0.2.
Try installing Collections 2.4.0-pre.5 if it will let you. For URP version 17.0.2 it has 2.4.0-pre.2 installed as default, but there was a memory leak in that version of the package that was already fixed. This might be your leak issue because in the leak text file, it has logs about the Collections package in the ilcppOutput call for Unity.Collections.cpp.
Edit: Release notes talking about the memory leak I am mentioning you might be effected by
https://docs.unity3d.com/Packages/com.unity.collections@2.4/changelog/CHANGELOG.html
Yes, I have 2.4.0-pre.2 installed. However, Unity doesn’t seem to allow me to change it. I have tried to update via Package Manager (I have experimental packages enabled, but no update is visible) and by changing it to 2.4.0-pre.5 in packages-lock.json, but Unity is always reverting it.
I installed the new version by name in the package manager window and got it to work. Is there an error or warning in the Unity console about not being able to update a package directory. A couple weeks ago I had to clear my package manager cache and the package cache folder to update a package in Unity 6 Beta. Not sure if you are running into the same issue I ran into. I know it was fixed after clearing the package cache once though.
For the setting when it asks for which package to install I used.
Name: com.unity.collections
Version: 2.4.0-pre.5
Thank you for your answer.
I didn’t know this button until just now. That one worked to install the updated package 
Unfortunately, the leaks are still there.