Updated Upstream (Bukkit/CraftBukkit) (#9485)

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:
82af5dc6 SPIGOT-7396: Add PlayerSignOpenEvent
3f0281ca SPIGOT-7063, PR-763: Add DragonBattle#initiateRespawn with custom EnderCrystals
f83c8df4 PR-873: Add PlayerRecipeBookClickEvent
14560d39 SPIGOT-7435: Add TeleportCause#EXIT_BED
2cc6db92 SPIGOT-7422, PR-887: Add API to set sherds on decorated pots
36022f02 PR-883: Add ItemFactory#getSpawnEgg
12eb5c46 PR-881: Update Scoreboard Javadocs, remove explicit exception throwing
f6d8d44a PR-882: Add modern time API methods to ban API
21a7b710 Upgrade some Maven plugins to reduce warnings
11fd1225 PR-886: Deprecate the SmithingRecipe constructor as it now does nothing
dbd1761d SPIGOT-7406: Improve documentation for getDragonBattle

CraftBukkit Changes:
d548daac2 SPIGOT-7446: BlockState#update not updating a spawner's type to null
70e0bc050 SPIGOT-7447: Fix --forceUpgrade
6752f1d63 SPIGOT-7396: Add PlayerSignOpenEvent
847b4cad5 SPIGOT-7063, PR-1071: Add DragonBattle#initiateRespawn with custom EnderCrystals
c335a555f PR-1212: Add PlayerRecipeBookClickEvent
4be756ecb SPIGOT-7445: Fix opening smithing inventory
db70bd6ed SPIGOT-7441: Fix issue placing certain items in creative/op
f7fa6d993 SPIGOT-7435: Add TeleportCause#EXIT_BED
b435e8e8d SPIGOT-7349: Player#setDisplayName not working when message/format unmodified
a2fafdd1d PR-1232: Re-add fix for player rotation
7cf863de1 PR-1233: Remove some old MC bug fixes now fixed in vanilla
08ec344ad Fix ChunkGenerator#generateCaves never being called
5daeb502a SPIGOT-7422, PR-1228: Add API to set sherds on decorated pots
52faa6b32 PR-1224: Add ItemFactory#getSpawnEgg
01cae71b7 SPIGOT-7429: Fix LEFT_CLICK_AIR not working for passable entities and spectators
a94277a18 PR-1223: Remove non-existent scoreboard display name/prefix/suffix limits
36b107660 PR-1225: Add modern time API methods to ban API
59ead25bc Upgrade some Maven plugins to reduce warnings
202fc5c4e Increase outdated build delay
ce545de57 SPIGOT-7398: TextDisplay#setInterpolationDuration incorrectly updates the line width

Spigot Changes:
b41c46db Rebuild patches
3374045a SPIGOT-7431: Fix EntityMountEvent returning opposite entities
0ca4eb66 Rebuild patches

patches/api/0066-ensureServerConversions-API.patch

@@ -7,26 +7,27 @@ This will take a Bukkit ItemStack and run it through any conversions a server pr
 to ensure it meets latest minecraft expectations.
 
 diff --git a/src/main/java/org/bukkit/inventory/ItemFactory.java b/src/main/java/org/bukkit/inventory/ItemFactory.java
-index 159e5a908b35b84b7fabc36581e093d9aa4c4b67..349da0065ddf000cacdc259fab0f2c759332e9ad 100644
+index a6795b102c9678b122dfd3b36d02783b9e108b48..74cd662d0594f2fbc5aa30ba64d9e4928145dbb9 100644
 --- a/src/main/java/org/bukkit/inventory/ItemFactory.java
 +++ b/src/main/java/org/bukkit/inventory/ItemFactory.java
-@@ -192,5 +192,17 @@ public interface ItemFactory {
-     @Nullable
+@@ -207,4 +207,18 @@ public interface ItemFactory {
      @Deprecated
      String getI18NDisplayName(@Nullable ItemStack item);
+     // Paper end - add getI18NDisplayName
 +
++    // Paper start - ensure server conversions API
 +    /**
-+     * Minecraft updates are converting simple item stacks into more complex NBT oriented Item Stacks.
++     * Minecraft's updates are converting simple item stacks into more complex NBT oriented Item Stacks.
 +     *
 +     * Use this method to ensure any desired data conversions are processed.
 +     * The input itemstack will not be the same as the returned itemstack.
 +     *
 +     * @param item The item to process conversions on
-+     * @return A potentially Data Converted ItemStack
++     * @return A potentially Data-Converted-ItemStack
 +     */
 +    @NotNull
 +    ItemStack ensureServerConversions(@NotNull ItemStack item);
-     // Paper end
++    // Paper end - ensure server conversions API
  }
 diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
 index 09a36df6edce2a283df80c67d5ef62da7ff73555..a8faa4c1881bae4d47d901388a78b991d138b518 100644