Update to Minecraft 1.21.2

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

paper-server/nms-patches/net/minecraft/server/AdvancementDataWorld.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/server/AdvancementDataWorld.java
 +++ b/net/minecraft/server/AdvancementDataWorld.java
-@@ -27,11 +27,15 @@
+@@ -21,10 +21,14 @@
  import net.minecraft.util.profiling.GameProfilerFiller;
  import org.slf4j.Logger;
  
@@ -8,18 +8,17 @@
 +import java.util.HashMap;
 +// CraftBukkit end
 +
- public class AdvancementDataWorld extends ResourceDataJson {
+ public class AdvancementDataWorld extends ResourceDataJson<Advancement> {
  
      private static final Logger LOGGER = LogUtils.getLogger();
-     public static final Gson GSON = (new GsonBuilder()).create();
 -    public Map<MinecraftKey, AdvancementHolder> advancements = Map.of();
 +    public Map<MinecraftKey, AdvancementHolder> advancements = new HashMap<>(); // CraftBukkit - SPIGOT-7734: mutable
      private AdvancementTree tree = new AdvancementTree();
      private final HolderLookup.a registries;
  
-@@ -55,7 +59,7 @@
-             }
- 
+@@ -40,7 +44,7 @@
+             this.validate(minecraftkey, advancement);
+             builder.put(minecraftkey, new AdvancementHolder(minecraftkey, advancement));
          });
 -        this.advancements = builder.buildOrThrow();
 +        this.advancements = new HashMap<>(builder.buildOrThrow()); // CraftBukkit - SPIGOT-7734: mutable