Updated Upstream (Bukkit/CraftBukkit/Spigot)

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:
b2f1908c SPIGOT-5783: Add helpful info to UnknownDependencyException
e4f46260 SPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot.
529a9a69 SPIGOT-5751: Clarify behaviour of block drop-related API methods

CraftBukkit Changes:
8ea9b138 Remove outdated build delay.
ffc2b251 Revert "#675: Fix redirected CommandNodes sometimes not being properly redirected"
cb701f6b #675: Fix redirected CommandNodes sometimes not being properly redirected
c9d7c16b SPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot.
fad2494a #673: Fix Craftworld#isChunkLoaded
8637ec00 SPIGOT-5751: Made breakNaturally and getDrops returns the correct item if no argument is given

Spigot Changes:
a99063f7 Rebuild patches

Fixes #3602

Spigot-API-Patches/0182-Add-BlockSoundGroup-interface.patch

@@ -64,7 +64,7 @@ index 0000000000000000000000000000000000000000..8cf87d228a7006658d52ce0da16c2d74
 +    Sound getFallSound();
 +}
 diff --git a/src/main/java/org/bukkit/block/Block.java b/src/main/java/org/bukkit/block/Block.java
-index 41f6b849186346f9a4e254122d2448a7ea8e0ee9..9713867950572fdc8c0f8798afcb37712a6a4e85 100644
+index d7c7df85228c01529e266ffdd3b3bcdc9ed35774..596f1d68b69a2ba3976398d0045379f047541f40 100644
 --- a/src/main/java/org/bukkit/block/Block.java
 +++ b/src/main/java/org/bukkit/block/Block.java
 @@ -1,6 +1,7 @@
@@ -75,7 +75,7 @@ index 41f6b849186346f9a4e254122d2448a7ea8e0ee9..9713867950572fdc8c0f8798afcb3771
  import org.bukkit.Chunk;
  import org.bukkit.FluidCollisionMode;
  import org.bukkit.Location;
-@@ -539,4 +540,16 @@ public interface Block extends Metadatable {
+@@ -540,4 +541,16 @@ public interface Block extends Metadatable {
       */
      @NotNull
      BoundingBox getBoundingBox();