mimalloc

[uni-dos]

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Version

3.5.0

Link to the release notes or announcement.

https://github.com/microsoft/mimalloc/releases/tag/v3.5.0

Reason for updating

The latest version of mold requires version 3 of mimalloc. We could either update the current package to 3 and rebuild all packages that require it or create a new package for the latest.