Update plugin com.gradleup.shadow to v9

Author: renovate[bot]

build.gradle

@@ -2,7 +2,7 @@ import de.undercouch.gradle.tasks.download.Download
 
 plugins {
     // https://plugins.gradle.org/plugin/com.gradleup.shadow
-    id 'com.gradleup.shadow' version '8.3.10'
+    id 'com.gradleup.shadow' version '9.4.1'
     // https://plugins.gradle.org/plugin/de.undercouch.download
     id 'de.undercouch.download' version '5.7.0'
     id 'java'