Update dependency com.gradleup.shadow to v8.3.9 (#4730)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -33,7 +33,7 @@ vault = "1.7.1"
 serverlib = "2.3.7"
 
 # Gradle plugins
-shadow = "8.3.8"
+shadow = "8.3.9"
 grgit = "4.1.1"
 spotless = "7.2.1"
 publish = "0.34.0"