Update upstream BD/CB/S

--- work/BuildData
Submodule work/BuildData 633897ca..f0032df4:
  > Mappings Update

--- work/CraftBukkit
Submodule work/CraftBukkit b7fea427..043d31de:
  > SPIGOT-5015: Players in spectator mode prevent block placement and block projectiles
  > Make bukkitEntity private to prevent incorrect usage

--- work/Spigot
Submodule work/Spigot 01d0f046..baafee91:
  > Rebuild patches

Spigot-Server-Patches/LootTable-API-Replenishable-Lootables-Feature.patch

@@ -520,7 +520,7 @@ index 000000000..d50410532
 +    }
 +}
 diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
-index e6e47bc57..202ad9489 100644
+index ec57b0ad8..1cc7b9f60 100644
 --- a/src/main/java/net/minecraft/server/Entity.java
 +++ b/src/main/java/net/minecraft/server/Entity.java
 @@ -0,0 +0,0 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
@@ -528,7 +528,7 @@ index e6e47bc57..202ad9489 100644
      }
  
 +    public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper
-     protected CraftEntity bukkitEntity;
+     private CraftEntity bukkitEntity;
  
      public CraftEntity getBukkitEntity() {
 diff --git a/src/main/java/net/minecraft/server/EntityMinecartContainer.java b/src/main/java/net/minecraft/server/EntityMinecartContainer.java