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

https://github.com/mmnmnnmnmm/void-packages fluidsynth
https://github.com/void-linux/void-packages/pull/39581

fluidsynth: update to 2.3.0
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/39581.patch is attached