Updated Upstream (Bukkit/CraftBukkit/Spigot)

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:
4b08dbc5 PR-752: Make Leaves Waterlogged
de323fc9 Downgrade dependency version

CraftBukkit Changes:
c3f219edb Fix missing abstract in CraftLeaves
886e6d8c8 SPIGOT-7038: Setting title or subtitle to empty string causes the player to disconnect
6c302a5e3 Make Leaves Waterlogged
53b681be5 Downgrade dependency version

Spigot Changes:
ee737122 Fixed system messages shown in action bar
f343df82 SPIGOT-7036: Don't use CHAT message type
63a06049 SPIGOT-7035: Actionbar Sending in Main Chat

patches/server/0215-InventoryCloseEvent-Reason-API.patch

@@ -174,10 +174,10 @@ index 6c708f65b3a3718c7b53e0c2cc12ee8ad62ff2b9..a6ac2fdcda24ec031d5d2ea9e4492614
      @Override
      public boolean isBlocking() {
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 5e6ef43ee8875cb09a915a657ec25f63d9480ba3..331dd7f22d71719e7598b076246b9dcaffa77562 100644
+index 7a7fe687f4d6d0439024b58651a7815d951625cb..47abdbaa2663efb4817396d49389f7f3719c5f74 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -1061,7 +1061,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+@@ -1060,7 +1060,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
  
          // Close any foreign inventory
          if (this.getHandle().containerMenu != this.getHandle().inventoryMenu) {