Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appears to apply and compile correctly.

This update has been tested to ensure that World Conversion still occurs correctly.

Bukkit Changes:
0812ce2c SPIGOT-4397: isChunkGenerated API

CraftBukkit Changes:
4824655c SPIGOT-4398: Upgrade to ASM 6.2.1 for better Java 11 support
eea43870 MC-134115: Fix issues converting tile entities
1a7f2d10 SPIGOT-4397: isChunkGenerated API
40aed54d SPIGOT-4396: Improve vehicle movement

Spigot Changes:
f6a273b1 Rebuild patches

Spigot-API-Patches/Add-Force-Loaded-Chunk-API.patch

@@ -30,12 +30,12 @@ index 8a8043351..4b9e0ca46 100644
 +    // Paper end
  }
 diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
-index 9c06fc163..5379a649e 100644
+index d367e890f..7bfe0b684 100644
 --- a/src/main/java/org/bukkit/World.java
 +++ b/src/main/java/org/bukkit/World.java
 @@ -0,0 +0,0 @@ public interface World extends PluginMessageRecipient, Metadatable {
-      */
-     public boolean isChunkGenerated(int x, int z);
+         return isChunkGenerated((int) chunkKey, (int) (chunkKey >> 32));
+     }
  
 +    /**
 +     * Checks if a chunk is force-loaded.