Upgrade Gradle version to 9.3.1.

Author: hsz

.github/template-cleanup/gradle.properties

@@ -21,7 +21,7 @@ platformBundledPlugins =
 platformBundledModules =
 
 # Gradle Releases -> https://github.com/gradle/gradle/releases
-gradleVersion = 9.2.1
+gradleVersion = 9.3.1
 
 # Opt-out flag for bundling Kotlin standard library -> https://jb.gg/intellij-platform-kotlin-stdlib
 kotlin.stdlib.default.dependency = false