Updated Upstream (CraftBukkit) (#4622)

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

CraftBukkit Changes:
1f4693a8 SPIGOT-6168: Fix error with Player.getBedSpawnLocation when world is unloaded while server running

Spigot-Server-Patches/Fix-NPE-in-getBedSpawnLocation.patch

@@ -1,28 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Josh Roy <10731363+JRoy@users.noreply.github.com>
-Date: Fri, 28 Aug 2020 12:01:25 -0400
-Subject: [PATCH] Fix NPE in getBedSpawnLocation
-
-
-diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
---- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -0,0 +0,0 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
- 
-     @Override
-     public Location getBedSpawnLocation() {
--        World world = getHandle().server.getWorldServer(getHandle().getSpawnDimension()).getWorld();
-+        WorldServer world = getHandle().server.getWorldServer(getHandle().getSpawnDimension()); // Paper - Fix NPE in getBedSpawnLocation
-         BlockPosition bed = getHandle().getSpawn();
- 
-         if (world != null && bed != null) {
--            Optional<Vec3D> spawnLoc = EntityHuman.getBed(((CraftWorld) world).getHandle(), bed, getHandle().getSpawnAngle(), getHandle().isSpawnForced(), true);
-+            Optional<Vec3D> spawnLoc = EntityHuman.getBed(world, bed, getHandle().getSpawnAngle(), getHandle().isSpawnForced(), true); // Paper - Fix NPE in getBedSpawnLocation
-             if (spawnLoc.isPresent()) {
-                 Vec3D vec = spawnLoc.get();
--                return new Location(world, vec.x, vec.y, vec.z);
-+                return new Location(world.getWorld(), vec.x, vec.y, vec.z); // Paper - Fix NPE in getBedSpawnLocation
-             }
-         }
-         return null;