Updated Upstream (CraftBukkit) (#8680)

Upstream has released updates that appear 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:
2ed3e3e6e SPIGOT-7210: Fix structures in custom worlds
585ab5ba1 SPIGOT-7207: WorldCreator creates world as super flat even when normal is specified

patches/server/Expose-vanilla-BiomeProvider-from-WorldInfo.patch

@@ -23,7 +23,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 @@ -0,0 +0,0 @@ public final class CraftServer implements Server {
          List<CustomSpawner> list = ImmutableList.of(new PhantomSpawner(), new PatrolSpawner(), new CatSpawner(), new VillageSiege(), new WanderingTraderSpawner(worlddata));
-         LevelStem worlddimension = this.getServer().registries().compositeAccess().registryOrThrow(Registries.LEVEL_STEM).get(actualDimension);
+         LevelStem worlddimension = iregistry.get(actualDimension);
  
 -        WorldInfo worldInfo = new CraftWorldInfo(worlddata, worldSession, creator.environment(), worlddimension.type().value());
 +        WorldInfo worldInfo = new CraftWorldInfo(worlddata, worldSession, creator.environment(), worlddimension.type().value(), worlddimension.generator(), this.getHandle().getServer().registryAccess()); // Paper

patches/server/Fix-and-optimise-world-force-upgrading.patch

@@ -363,7 +363,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
 @@ -0,0 +0,0 @@ public final class CraftServer implements Server {
-         }
+         worlddata.customDimensions = iregistry;
          worlddata.checkName(name);
          worlddata.setModdedInfo(this.console.getServerModName(), this.console.getModdedStatus().shouldReportAsModified());
 -