Update to Minecraft 1.21

By: md_5 <git@md-5.net>

paper-server/nms-patches/net/minecraft/world/entity/projectile/EntityDragonFireball.patch

@@ -1,8 +1,8 @@
 --- a/net/minecraft/world/entity/projectile/EntityDragonFireball.java
 +++ b/net/minecraft/world/entity/projectile/EntityDragonFireball.java
-@@ -15,6 +15,10 @@
- import net.minecraft.world.phys.MovingObjectPosition;
+@@ -16,6 +16,10 @@
  import net.minecraft.world.phys.MovingObjectPositionEntity;
+ import net.minecraft.world.phys.Vec3D;
  
 +// CraftBukkit start
 +import org.bukkit.event.entity.EntityRemoveEvent;
@@ -11,7 +11,7 @@
  public class EntityDragonFireball extends EntityFireball {
  
      public static final float SPLASH_RANGE = 4.0F;
-@@ -61,7 +65,7 @@
+@@ -62,7 +66,7 @@
  
                  this.level().levelEvent(2006, this.blockPosition(), this.isSilent() ? -1 : 1);
                  this.level().addFreshEntity(entityareaeffectcloud);