Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Bukkit Changes:
e9ce88b9 SPIGOT-6562: Add more specific sculk sensor event
CraftBukkit Changes:
d7ef1e91 SPIGOT-6558: Attempt to improve SkullMeta
e7a63287 SPIGOT-6562: Add more specific sculk sensor event