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:
d5a777e7 SPIGOT-7078: Add EntityPotionEffectEvent.Cause#WARDEN
CraftBukkit Changes:
82f757467 SPIGOT-7078: Add EntityPotionEffectEvent.Cause#WARDEN
c924fa531 SPIGOT-7072: Call events for stepping on sculk sensors and sculk shriekers