Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
05cb10c56f Add repo for Velocity natives to dev bundle (#6536)
7bd7b18811 Configurable feature seeds (#6531)
ca708a0944 Updated Upstream (Bukkit/CraftBukkit/Spigot) (#6539)
f02d3d8989 flattener should try to render custom translations (#6540)
1276bd5039 Fixed layers from V2550 not being added to list (#6541)
a763f258da docs: remove Paper tool method for patch mods
20903fcf5e docs: drop table of contents; it's built into GH

patches/server/0067-Add-canSaveToDisk-to-Entity.patch

@@ -35,11 +35,11 @@ index f52420f27f51d9dbf214f96a0530c0f17f2bc5fc..12cd1b453150e098975c34e00ec9277f
          skull.setPosRaw(headX, headY, headZ);
          level.addFreshEntity(skull);
 diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
-index 05af8f292a598a242a396afe4c2ddb2aa2c6b42e..47d138627286ef03339ac06b6c7f4a151bdcb823 100644
+index 916f93b097a65f95e830fe5e1567c85d304f808f..0ec5522e0233877792cb85e170a0d58883789d5d 100644
 --- a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
 +++ b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
-@@ -92,6 +92,7 @@ public class EntityStorage implements EntityPersistentStorage<Entity> {
-             ListTag listTag = new ListTag();
+@@ -109,6 +109,7 @@ public class EntityStorage implements EntityPersistentStorage<Entity> {
+ 
              final java.util.Map<net.minecraft.world.entity.EntityType<?>, Integer> savedEntityCounts = new java.util.HashMap<>(); // Paper
              dataList.getEntities().forEach((entity) -> {
 +                if (!entity.canSaveToDisk()) return; // Purpur