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/api/0175-Entity-getEntitySpawnReason.patch

@@ -1,27 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Sun, 24 Mar 2019 00:21:23 -0400
-Subject: [PATCH] Entity#getEntitySpawnReason
-
-Allows you to return the SpawnReason for why an Entity Spawned
-
-Pre existing entities will return NATURAL if it was a non
-persistenting Living Entity, SPAWNER for spawners,
-or DEFAULT since data was not stored.
-
-diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
-index 8751ba50a0e5d00839885ad5a905eb727445b749..f17f30a9969e52313387c0d92edd980f72687a11 100644
---- a/src/main/java/org/bukkit/entity/Entity.java
-+++ b/src/main/java/org/bukkit/entity/Entity.java
-@@ -754,5 +754,11 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
-         // TODO remove impl here
-         return getLocation().getChunk();
-     }
-+
-+    /**
-+     * @return The {@link org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason} that spawned this entity.
-+     */
-+    @NotNull
-+    org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason getEntitySpawnReason();
-     // Paper end
- }