fix(deps): update dependency com.gradleup.shadow:com.gradleup.shadow.gradle.plugin to v9.3.1

Author: renovate[bot]

buildSrc/build.gradle.kts

@@ -9,5 +9,5 @@ repositories {
 dependencies {
     implementation("net.kyori", "indra-common", "3.2.0")
     implementation("xyz.jpenilla:resource-factory:1.3.1")
-    implementation("com.gradleup.shadow:com.gradleup.shadow.gradle.plugin:9.0.2")
+    implementation("com.gradleup.shadow:com.gradleup.shadow.gradle.plugin:9.3.1")
 }