Update plugin shadowjar to v9

Author: renovate[bot]

gradle/libs.versions.toml

@@ -182,7 +182,7 @@ buildconfig = { id = "com.github.gmazzo.buildconfig", version = "6.0.7"}
 download = { id = "de.undercouch.download", version = "5.6.0"}
 
 # ShadowJar
-shadowjar = { id = "com.gradleup.shadow", version = "8.3.9"}
+shadowjar = { id = "com.gradleup.shadow", version = "9.3.1"}
 
 # Moko
 moko = { id = "dev.icerock.mobile.multiplatform-resources", version.ref = "moko" }