Updated Upstream (Spigot) (#4745)

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

Spigot Changes:
a19903d2 SPIGOT-520: Add option to disable player data saving

Spigot-Server-Patches/0497-Fix-CraftScheduler-runTaskTimerAsynchronously-Plugin.patch

@@ -0,0 +1,21 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: ossi <oser0002@gmail.com>
+Date: Fri, 12 Jun 2020 01:38:06 +0300
+Subject: [PATCH] Fix CraftScheduler#runTaskTimerAsynchronously(Plugin,
+ Consumer<BukkitTask>, long, long) scheduling a non-repeating task instead of
+ a repeating one.
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+index 7532bbd82559763cfaf5433a07914b5fb906122c..1bc65ae63673b1de3aa6e0c49bf95dadd7d7b355 100644
+--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
++++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+@@ -184,7 +184,7 @@ public class CraftScheduler implements BukkitScheduler {
+ 
+     @Override
+     public void runTaskTimerAsynchronously(Plugin plugin, Consumer<BukkitTask> task, long delay, long period) throws IllegalArgumentException {
+-        runTaskTimerAsynchronously(plugin, (Object) task, delay, CraftTask.NO_REPEATING);
++        runTaskTimerAsynchronously(plugin, (Object) task, delay, period);
+     }
+ 
+     @Override