Prepare next development version

Author: Goooler

gradle.properties

@@ -11,7 +11,7 @@ org.gradle.parallel=true
 
 GROUP=com.gradleup.shadow
 POM_ARTIFACT_ID=shadow-gradle-plugin
-VERSION_NAME=8.3.8
+VERSION_NAME=8.3.9-SNAPSHOT
 
 SONATYPE_AUTOMATIC_RELEASE=true
 SONATYPE_HOST=CENTRAL_PORTAL