Upstream has released updates that appears 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:
f52c70ab Fix incorrect nullability in MultipleFacing
6af4c0b2 SPIGOT-5311: Add API to get/set item associated with throwable projectiles
97aeae56 Add set/isAware to disable Vanilla AI components of a Mob
CraftBukkit Changes:
fba9f487 Improve legacy conversion of some materials that changed post flattening
b1ba8749 Move Bukkit.Aware loading/saving to correct location
f7cdb53c SPIGOT-5311: Add API to get/set item associated with throwable projectiles
689f429c #634: Cross platform patch scripts
ab85433d Add set/isAware to disable Vanilla AI components of a Mob
Spigot Changes:
8faa8b45 Rebuild patches
Shane Freeder
Zach Brown
MiniDigger