Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@e3aca921 Replace ConcurrentUtil's Validate with Objects
PaperMC/Paper@9a626dd7 Rewrite ticket counter system
PaperMC/Paper@65250cbe Drop "Optimize Collision to not load chunks"
PaperMC/Paper@55d56d91 Apply "Flush regionfiles on save configuration option"
PaperMC/Paper@920e8d35 Apply "Optimise collision checking in player move packet handling"
PaperMC/Paper@ec492d3f Apply "Improve keepalive ping system"
PaperMC/Paper@8f659478 Apply "Optimise EntityScheduler ticking"
PaperMC/Paper@086b4fd4 Apply "Optional per player mob spawns"
PaperMC/Paper@2f4211ed Apply "Improve cancelling PreCreatureSpawnEvent with per player mob spawns"
PaperMC/Paper@b6d95574 Apply "Optimize Hoppers"
PaperMC/Paper@388e6936 update generator
PaperMC/Paper@a3c89a8f add javadocs for new api
PaperMC/Paper@fcc763ad Call BlockRedstoneEvent for the shelf
PaperMC/Paper@03eb18bb replace requireNonNull by checkArgument and deprecate MCUtil#toLocation
PaperMC/Paper@6b7bf014 bump built-in datapack version
PaperMC/Paper@2779a538 deprecate #lanterns material tag in favour of vanilla tag
PaperMC/Paper@6f9957e8 Mannequin#createDefaultProfile -> Mannequin#defaultProfile
PaperMC/Paper@24874e53 Also rename Mannequin profile getter/setters for consistency
PaperMC/Paper@bc2ae107 Fix default respawn dimension being null for new worlds
PaperMC/Paper@eb421583 Use 0.0.4 release of ConcurrentUtil
PaperMC/Paper@bb017458 1.21.9-pre2
PaperMC/Paper@02492043 1.21.9-pre2 feature patches
PaperMC/Paper@9360ba42 Identifying comments for MinecraftServer
PaperMC/Paper@5d3aa537 Some diff improvements in prepare spawn task
PaperMC/Paper@22ad4519 Move some stuff to ATs
PaperMC/Paper@0ea15c97 Drop no longer applicable ATs
PaperMC/Paper@cf78f2a2 bump api-version/datapack format and add a copper torch tag
PaperMC/Paper@60cb0dfc generate ClientOption enums and mark CraftBlockData impl as null marked
PaperMC/Paper@40252892 Add pre2 to api version
PaperMC/Paper@f2cb073a Set build channel to alpha
PaperMC/Paper@90b29c4c Port most of the anti-xray patch
PaperMC/Paper@4a8e88dc Disable oldPaperCommit to fix CI build
PaperMC/Paper@121ac2eb Port the last Anti-XRay hunk
PaperMC/Paper@f43641f8 Use ConcurrentUtil 0.0.5
PaperMC/Paper@1f79388d fix end portal teleportation
PaperMC/Paper@2efb400a [ci/skip] Adjust spawn location event docs
PaperMC/Paper@cb9fc05d simplify overloads
PaperMC/Paper@25ecc590 Enable Anti-Xray
PaperMC/Paper@4d7185f6 Add AsyncPlayerSpawnLocationEvent#isNewPlayer (#13081)
PaperMC/Paper@dc474a89 Fixup vanilla code for Anti-Xray changes
PaperMC/Paper@0e23b024 Add back null check for chunkPacketBlockController

purpur-server/minecraft-patches/sources/net/minecraft/server/level/ServerPlayerGameMode.java.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/server/level/ServerPlayerGameMode.java
 +++ b/net/minecraft/server/level/ServerPlayerGameMode.java
-@@ -367,6 +_,7 @@
+@@ -368,6 +_,7 @@
                  }
                  return false;
              }
@@ -8,7 +8,7 @@
          }
          // CraftBukkit end
  
-@@ -484,6 +_,7 @@
+@@ -485,6 +_,7 @@
      public InteractionHand interactHand;
      public ItemStack interactItemStack;
      public InteractionResult useItemOn(ServerPlayer player, Level level, ItemStack stack, InteractionHand hand, BlockHitResult hitResult) {
@@ -16,7 +16,7 @@
          BlockPos blockPos = hitResult.getBlockPos();
          BlockState blockState = level.getBlockState(blockPos);
          boolean cancelledBlock = false;
-@@ -526,7 +_,7 @@
+@@ -527,7 +_,7 @@
              boolean flag = !player.getMainHandItem().isEmpty() || !player.getOffhandItem().isEmpty();
              boolean flag1 = player.isSecondaryUseActive() && flag;
              ItemStack itemStack = stack.copy();
@@ -25,7 +25,7 @@
                  InteractionResult interactionResult = blockState.useItemOn(player.getItemInHand(hand), level, player, hand, hitResult);
                  if (interactionResult.consumesAction()) {
                      CriteriaTriggers.ITEM_USED_ON_BLOCK.trigger(player, blockPos, itemStack);
-@@ -572,4 +_,18 @@
+@@ -573,4 +_,18 @@
      public void setLevel(ServerLevel serverLevel) {
          this.level = serverLevel;
      }