[Auto] Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears 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:
6f57bf95 SPIGOT-4391: Sign editable API

CraftBukkit Changes:
5cffeca2 SPIGOT-4391: Sign editable API

Spigot-Server-Patches/API-to-get-a-BlockState-without-a-snapshot.patch

@@ -13,7 +13,7 @@ also Avoid NPE during CraftBlockEntityState load if could not get TE
 If Tile Entity was null, correct Sign to return empty lines instead of null
 
 diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
-index b3c5766a27..29fe031d85 100644
+index b3c5766a2..29fe031d8 100644
 --- a/src/main/java/net/minecraft/server/TileEntity.java
 +++ b/src/main/java/net/minecraft/server/TileEntity.java
 @@ -0,0 +0,0 @@ public abstract class TileEntity implements KeyedObject { // Paper
@@ -39,7 +39,7 @@ index b3c5766a27..29fe031d85 100644
          return null;
      }
 diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
-index 370a222f83..f493ebc4f3 100644
+index 922266441..96e188b3a 100644
 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
 +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
 @@ -0,0 +0,0 @@ public class CraftBlock implements Block {
@@ -64,7 +64,7 @@ index 370a222f83..f493ebc4f3 100644
  
          switch (material) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
-index 0558cafe31..d4d9c5fc50 100644
+index 0558cafe3..d4d9c5fc5 100644
 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
 +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockEntityState.java
 @@ -0,0 +0,0 @@ public class CraftBlockEntityState<T extends TileEntity> extends CraftBlockState
@@ -114,7 +114,7 @@ index 0558cafe31..d4d9c5fc50 100644
  
      private T createSnapshot(T tileEntity, World world) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
-index 7a8d445299..97b4e6910d 100644
+index e6f86cc4b..3a8f64360 100644
 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
 +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
 @@ -0,0 +0,0 @@ public class CraftSign extends CraftBlockEntityState<TileEntitySign> implements