Bump com.gradleup.shadow:shadow-gradle-plugin from 8.3.9 to 9.4.0 (#4656)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

buildSrc/build.gradle.kts

@@ -32,7 +32,7 @@ dependencies {
   // When updating, update above in plugins too
   implementation("com.diffplug.spotless:spotless-plugin-gradle:8.4.0")
   implementation("com.github.spotbugs.snom:spotbugs-gradle-plugin:6.4.8")
-  implementation("com.gradleup.shadow:shadow-gradle-plugin:9.3.2")
+  implementation("com.gradleup.shadow:shadow-gradle-plugin:9.4.0")
 
   implementation("org.owasp:dependency-check-gradle:12.2.0")