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c998a1d23 Increase outdated build delay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/api/0001-Convert-project-to-Gradle.patch

@@ -27,7 +27,7 @@ index 11038da2e071699d6561a331565db0c8d7850d0e..317acfec5894101294a55abff6181943
 +/.factorypath
 diff --git a/build.gradle.kts b/build.gradle.kts
 new file mode 100644
-index 0000000000000000000000000000000000000000..9686f621c7b837a7a38ffb2fea10ae492b18556d
+index 0000000000000000000000000000000000000000..386d8c36510e69a69ce4536e67af4a6e4e886685
 --- /dev/null
 +++ b/build.gradle.kts
 @@ -0,0 +1,81 @@
@@ -59,7 +59,7 @@ index 0000000000000000000000000000000000000000..9686f621c7b837a7a38ffb2fea10ae49
 +    testImplementation("org.apache.commons:commons-lang3:3.12.0")
 +    testImplementation("junit:junit:4.13.2")
 +    testImplementation("org.hamcrest:hamcrest-library:1.3")
-+    testImplementation("org.ow2.asm:asm-tree:9.3")
++    testImplementation("org.ow2.asm:asm-tree:9.4")
 +}
 +
 +configure<PublishingExtension> {
@@ -114,10 +114,10 @@ index 0000000000000000000000000000000000000000..9686f621c7b837a7a38ffb2fea10ae49
 +}
 diff --git a/pom.xml b/pom.xml
 deleted file mode 100644
-index 389f3761876d2a667309d317d1a99b545f36771a..0000000000000000000000000000000000000000
+index afe250e329e19a56f58085efeaa28d86b79118ec..0000000000000000000000000000000000000000
 --- a/pom.xml
 +++ /dev/null
-@@ -1,252 +0,0 @@
+@@ -1,254 +0,0 @@
 -
 -<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 -         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
@@ -220,7 +220,7 @@ index 389f3761876d2a667309d317d1a99b545f36771a..00000000000000000000000000000000
 -        <dependency>
 -            <groupId>org.ow2.asm</groupId>
 -            <artifactId>asm-tree</artifactId>
--            <version>9.3</version>
+-            <version>9.4</version>
 -            <scope>test</scope>
 -        </dependency>
 -    </dependencies>
@@ -274,7 +274,7 @@ index 389f3761876d2a667309d317d1a99b545f36771a..00000000000000000000000000000000
 -            <plugin>
 -                <groupId>org.apache.maven.plugins</groupId>
 -                <artifactId>maven-shade-plugin</artifactId>
--                <version>3.2.4</version>
+-                <version>3.4.1</version>
 -                <executions>
 -                    <execution>
 -                        <phase>package</phase>
@@ -294,6 +294,8 @@ index 389f3761876d2a667309d317d1a99b545f36771a..00000000000000000000000000000000
 -                    </filters>
 -                    <!-- when downloading via Maven we can pull depends individually -->
 -                    <shadedArtifactAttached>true</shadedArtifactAttached>
+-                    <!-- In 3.3.0 and later, shadedArtifactAttached causes dependant projects to use dependency reduced pom (bug?) -->
+-                    <createDependencyReducedPom>false</createDependencyReducedPom>
 -                </configuration>
 -            </plugin>
 -            <plugin>