Since using [multidict==6.3.0](https://github.com/aio-libs/multidict/releases/tag/v6.3.0) we are having a memory leak on yarl._url.

We are using aiohttp==3.9.5 and installing deps yarl==1.18.3 that has multidict >= 4.0

Here you can see a memray screenshot

We get rid of the leak downgrading again to multidict==6.2.0