Update dependency com.gradleup.shadow:com.gradleup.shadow.gradle.plugin to v8.3.9

Author: renovate[bot]

gradle/templates.versions.toml

@@ -34,7 +34,7 @@ gradle-enterprise = "3.19.2"
 gradle-enterprise-maven-custom-data = "2.0.1"
 gradle-enterprise-maven-extension = "1.23.3"
 gradle-jrebel-plugin = "1.1.10"
-gradle-shadow-plugin = "8.3.7"
+gradle-shadow-plugin = "8.3.9"
 jib-gradle-plugin = "2.8.0"
 jobrunr = "6.3.5"
 jruby = "9.4.13.0"