build(Dependencies): Update dependency ServerPackCreator to 3.9.0.

build.gradle

@@ -46,7 +46,7 @@ dependencies {
   // Dependencies required for any plugin and/or extension to work
   implementation 'org.pf4j:pf4j:3.7.0'
   annotationProcessor 'org.pf4j:pf4j:3.7.0'
-  implementation 'de.griefed:serverpackcreator:3.6.0'
+  implementation 'de.griefed:serverpackcreator:3.9.0'
 
   // Required if you want to log to any of ServerPackCreators logs
   implementation 'org.apache.logging.log4j:log4j-api:2.18.0'