Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@523efa41 Flatten currentTick incr into file patches
PaperMC/Paper@4dcd8377 Add CommandSourceStack to UnknownCommandEvent (#13083)
PaperMC/Paper@ffd5158a Update 1.21.9 reobf mappings data (#13135)
PaperMC/Paper@b4b1f11f [ci/skip] Add docs for virtual createMerchant in MerchantInventoryViewBuilder#merchant (#13125)
PaperMC/Paper@b3d21583 Disable javadoc.io links
PaperMC/Paper@84831638 Yield millis from Bukkit#getAverageTickTime
PaperMC/Paper@914fb084 Fix Entity#updateFluidHeightAndDoFluidPushing inconsistency with Vanilla
PaperMC/Paper@e9fa3a73 Use correct queue when blocking on futures

purpur-server/build.gradle.kts.patch

@@ -25,8 +25,8 @@
 +    // Purpur end - Rebrand
 +
      spigot {
-         enabled = false
-         buildDataRef = "436eac9815c211be1a2a6ca0702615f995e81c44"
+         enabled = true
+         buildDataRef = "42d18d4c4653ffc549778dbe223f6994a031d69e"
 @@ -107,7 +_,21 @@
      }
  }