Updated Upstream (Bukkit/CraftBukkit) (#8430)

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

Bukkit Changes:
09943450 Update SnakeYAML version
5515734f SPIGOT-7162: Incorrect description for Entity#getVehicle javadoc
6f82b381 PR-788: Add getHand() to all relevant events

CraftBukkit Changes:
aaf484f6f SPIGOT-7163: CraftMerchantRecipe doesn't copy demand and specialPrice from BukkitMerchantRecipe
5329dd6fd PR-1107: Add getHand() to all relevant events
93061706e SPIGOT-7045: Ocelots never spawn with babies with spawn reason OCELOT_BABY

patches/server/0499-Fixed-TileEntityBell-memory-leak.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: giacomo <32515303+giacomozama@users.noreply.github.com>
+Date: Sat, 10 Oct 2020 12:15:33 +0200
+Subject: [PATCH] Fixed TileEntityBell memory leak
+
+TileEntityBell has a list of entities (entitiesAtRing) that was not being cleared at the right time, causing leaks whenever a bell would be rung near a crowd of entities.
+
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/BellBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BellBlockEntity.java
+index 4353ad2f67556feaa0fdd34e8e907b17ab697565..feaad48e9bbc1e658324ef9e1e7e73aca0b3bf48 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/BellBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/BellBlockEntity.java
+@@ -61,6 +61,11 @@ public class BellBlockEntity extends BlockEntity {
+ 
+         if (blockEntity.ticks >= 50) {
+             blockEntity.shaking = false;
++            // Paper start
++            if (!blockEntity.resonating) {
++                blockEntity.nearbyEntities.clear();
++            }
++            // Paper end
+             blockEntity.ticks = 0;
+         }
+ 
+@@ -74,6 +79,7 @@ public class BellBlockEntity extends BlockEntity {
+                 ++blockEntity.resonationTicks;
+             } else {
+                 bellEffect.run(world, pos, blockEntity.nearbyEntities);
++                blockEntity.nearbyEntities.clear(); // Paper
+                 blockEntity.resonating = false;
+             }
+         }
+@@ -116,6 +122,7 @@ public class BellBlockEntity extends BlockEntity {
+             }
+         }
+ 
++        this.nearbyEntities.removeIf(e -> !e.isAlive()); // Paper
+     }
+ 
+     private static boolean areRaidersNearby(BlockPos pos, List<LivingEntity> hearingEntities) {