Updated Upstream (Bukkit/CraftBukkit)

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:
18cda936 Fix variant of unloadChunkRequest that was incorrectly never deprecated
00763e1b Deprecate some methods
35a83d54 SPIGOT-4572: Make default no permission message clearer
6163343d Fix some misplaced material enum entries
8736469c Fix typo in TechnicalPiston documentation

CraftBukkit Changes:
0c715b32 SPIGOT-4579: Shulker boxes not dropping in creative
50fbc3f1 SPIGOT-4576: Fix attributes in itemstack internal data being lost
8059a937 SPIGOT-4577: Fix loss of int/double custom tags when serialized to yaml
07e504c3 Clarify exception thrown when setting drop chance for player inventory
98b862ad Fix duplicate iron golem add
843cee65 Fix a bunch of duplicate EntityCombustEvent calls
43855624 SPIGOT-4571: EntityCombustEvent not firing for phantoms

Spigot-API-Patches/Basic-PlayerProfile-API.patch

@@ -232,7 +232,7 @@ index 00000000..d17061e6
 +    }
 +}
 diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
-index cb21a4e4..02e7d118 100644
+index 06d1725d..bc04472e 100644
 --- a/src/main/java/org/bukkit/Bukkit.java
 +++ b/src/main/java/org/bukkit/Bukkit.java
 @@ -0,0 +0,0 @@ import org.bukkit.generator.ChunkGenerator;
@@ -284,7 +284,7 @@ index cb21a4e4..02e7d118 100644
  
      public static Server.Spigot spigot()
 diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
-index 10f56d4f..9e7bc162 100644
+index edadec3f..9f3ffb16 100644
 --- a/src/main/java/org/bukkit/Server.java
 +++ b/src/main/java/org/bukkit/Server.java
 @@ -0,0 +0,0 @@ import org.bukkit.generator.ChunkGenerator;