Update shadow to 8.3.6

build.gradle.kts

@@ -6,7 +6,7 @@ val pluginDir: File = serverDir.resolve("plugins")
 
 plugins {
     `java-library`
-    id("io.github.goooler.shadow") version "8.1.8"
+    id("com.gradleup.shadow") version "8.3.6"
     eclipse
 }