Bump mockbukkit and fix test dep

Author: benwoo1110

build.gradle

@@ -1,7 +1,7 @@
 import org.apache.tools.ant.filters.ReplaceTokens
 
 plugins {
-    id 'org.mvplugins.multiverse-plugin' version '1.2.1'
+    id 'org.mvplugins.multiverse-plugin' version '1.2.2'
 }
 
 group = 'org.mvplugins.multiverse.core'
@@ -25,14 +25,12 @@ repositories {
 }
 
 configure(apiDependencies) {
-    serverApiVersion = '1.21.9-R0.1-SNAPSHOT'
+    serverApiVersion = '1.21.8-R0.1-SNAPSHOT'
     mockBukkitServerApiVersion = '1.21'
-    mockBukkitVersion = '4.78.0'
+    mockBukkitVersion = '4.84.0'
 }
 
 dependencies {
-    testImplementation 'io.papermc.paper:paper-api:1.21.8-R0.1-SNAPSHOT'
-
     // Economy
     externalPlugin('com.github.MilkBowl:VaultAPI:1.7.1') {
         exclude group: 'org.bukkit', module: 'bukkit'