There is a new pull request by atk against master on the void-packages repository

https://github.com/atk/void-packages slack-desktop-4.22.0
https://github.com/void-linux/void-packages/pull/34111

slack-desktop: update to 4.22.0
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/34111.patch is attached