Update dependency com.gradleup.shadow to v9.4.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -7,7 +7,7 @@ protocollib = "5.4.0"
 bstats = "3.0.0"
 
 # Gradle plugins
-shadow = "9.3.2"
+shadow = "9.4.1"
 spotless = "8.4.0"
 bukkityml = "0.6.0"
 minotaur = "2.9.0"