There is an updated pull request by mhmdanas against master on the void-packages repository

https://github.com/mhmdanas/void-packages fluidsynth-2.3.4
https://github.com/void-linux/void-packages/pull/46998

fluidsynth: update to 2.3.4.
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/46998.patch is attached