Updated Upstream (Bukkit/CraftBukkit/Spigot) (#8874)

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:
6b3c598b PR-814: Add a method to send multiple equipment changes
181a984b Update Maven shade version to align with CraftBukkit
a5a36e32 Revert "Update Maven shade version to align with CraftBukkit"
7a8f4a42 Update Maven shade version to align with CraftBukkit
58327201 Add support for Java 20

CraftBukkit Changes:
b56426c7a PR-1142: Calculate explosion damage separately for each affected EntityComplexPart
fbe3410af PR-1140: Add a method to send multiple equipment changes
8434e3633 Add support for Java 20
c998a1d23 Increase outdated build delay
4a929b5d6 SPIGOT-7267: Fix EntityType#getTranslationKey() and add unit test
086d8dc8a SPIGOT-7268: CraftMetaPotion reads ShowParticles and ShowIcon properties incorrectly
8ba5e399e SPIGOT-7262: Improve visibility API

Spigot Changes:
a2190e30 Rebuild patches

patches/server/0028-Implement-Paper-VersionChecker.patch

@@ -140,10 +140,10 @@ index 0000000000000000000000000000000000000000..351159bbdb0c8045f4983f54dee34430
 +    }
 +}
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
-index 8324787573510df3e23e6833f06aa1618336b7bb..0ee761fa0d42fd90e82f3284ee756ddd60c6178d 100644
+index d22210c6aaeed8ac6df296f47a699f2e5b67abf4..289276ae40409868c6293c5ab3bafe54c2ccf15c 100644
 --- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
 +++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
-@@ -454,6 +454,11 @@ public final class CraftMagicNumbers implements UnsafeValues {
+@@ -455,6 +455,11 @@ public final class CraftMagicNumbers implements UnsafeValues {
      public String getTimingsServerName() {
          return io.papermc.paper.configuration.GlobalConfiguration.get().timings.serverName;
      }