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

https://github.com/bobertlo/void-packages cimg-30
https://github.com/void-linux/void-packages/pull/34605

CImg: update to 3.0.0
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/34605.patch is attached