chore(deps): update plugin com.gradleup.shadow to v9.3.1

Author: renovate[bot]

settings.gradle.kts

@@ -20,7 +20,7 @@ dependencyResolutionManagement {
             version("hangar", "0.1.4")
             version("paper.yml", "0.6.0")
             version("paper.run", "3.0.2")
-            version("shadowJar", "9.3.0")
+            version("shadowJar", "9.3.1")
             version("cyclonedx", "3.1.0")
 
             version("paper", "1.21.8-R0.1-SNAPSHOT")