Updated Upstream (Bukkit/CraftBukkit/Spigot)

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:
bf1fa3e3 Update to Minecraft 1.15.1

CraftBukkit Changes:
30a1b691 Update to Minecraft 1.15.1
e2790ae2 Remove outdated build delay.

Spigot Changes:
2ee05fef Update to Minecraft 1.15.1

Spigot-API-Patches/0001-POM-changes.patch

@@ -1,11 +1,11 @@
-From cc8002ef8dee63701f56047bc02977182517f71a Mon Sep 17 00:00:00 2001
+From 9556d6e73175d5674058d56c48928d2e0cab3006 Mon Sep 17 00:00:00 2001
 From: Zach Brown <zach.brown@destroystokyo.com>
 Date: Tue, 1 Mar 2016 00:16:08 +0100
 Subject: [PATCH] POM changes
 
 
 diff --git a/pom.xml b/pom.xml
-index 78388c20..3617d769 100644
+index fd011758..416da4ae 100644
 --- a/pom.xml
 +++ b/pom.xml
 @@ -2,34 +2,28 @@
@@ -22,7 +22,7 @@ index 78388c20..3617d769 100644
 -    <artifactId>spigot-api</artifactId>
 +    <groupId>com.destroystokyo.paper</groupId>
 +    <artifactId>paper-api</artifactId>
-     <version>1.15-R0.1-SNAPSHOT</version>
+     <version>1.15.1-R0.1-SNAPSHOT</version>
      <packaging>jar</packaging>
  
 -    <name>Spigot-API</name>
@@ -111,5 +111,5 @@ index 78388c20..3617d769 100644
                      <shadedArtifactAttached>true</shadedArtifactAttached>
                  </configuration>
 -- 
-2.24.0
+2.24.1