Zombie Villagers From Spawner is a minimalistic configurable mod which puts back the ability for zombie spawners to spawn the villager variant, originally removed in Minecraft version 1.11.
isZombieVillagerChance default 0.1, min 0, max 1.0 The chance a new zombie spawn from a spawner is of the villager variant.
You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.
Serilum.com contains an overview and more information on all mods available. For issues, ideas, suggestions or anything else there is the Github repo. Thanks!