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

Please note that this build includes changes to meet upstreams
requirements for nullability annotations. While we aim for a level of
accuracy, these might not be 100% correct, if there are any issues,
please speak to us on discord, or open an issue on the tracker to
discuss.

Bukkit Changes:
9a6a1de3 Remove nullability annotations from enum constructors
3f0591ea SPIGOT-2540: Add nullability annotations to entire Bukkit API

CraftBukkit Changes:
8d8475fc SPIGOT-4666: Force parameter in HumanEntity#sleep
8b1588e2 Fix ExplosionPrimeEvent#setFire not working with EnderCrystals
39a287b7 Don't ignore newlines in PlayerListHeader/Footer

Spigot Changes:
cf694d87 Add nullability annotations

Spigot-API-Patches/Allow-plugins-to-use-SLF4J-for-logging.patch

@@ -14,13 +14,13 @@ it without having to shade it in the plugin and going through
 several layers of logging abstraction.
 
 diff --git a/pom.xml b/pom.xml
-index 84ba2076..3ebc6287 100644
+index 082f2f0c5..13cdc25f8 100644
 --- a/pom.xml
 +++ b/pom.xml
 @@ -0,0 +0,0 @@
-             <scope>compile</scope>
+             <version>17.0.0</version>
+             <scope>provided</scope>
          </dependency>
- 
 +        <!-- Paper - Add SLF4J -->
 +        <dependency>
 +            <groupId>org.slf4j</groupId>
@@ -28,19 +28,19 @@ index 84ba2076..3ebc6287 100644
 +            <version>1.7.25</version>
 +            <scope>compile</scope>
 +        </dependency>
-+
          <!-- testing -->
          <dependency>
              <groupId>junit</groupId>
 diff --git a/src/main/java/org/bukkit/plugin/Plugin.java b/src/main/java/org/bukkit/plugin/Plugin.java
-index 55debf5d..8d2999ac 100644
+index 076ec041f..b4882f48b 100644
 --- a/src/main/java/org/bukkit/plugin/Plugin.java
 +++ b/src/main/java/org/bukkit/plugin/Plugin.java
 @@ -0,0 +0,0 @@ public interface Plugin extends TabExecutor {
-      */
+     @NotNull
      public Logger getLogger();
  
 +    // Paper start - Add SLF4J logger
++    @NotNull
 +    default org.slf4j.Logger getSLF4JLogger() {
 +        return org.slf4j.LoggerFactory.getLogger(getLogger().getName());
 +    }