upgrade rat

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1904192 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

@@ -36,7 +36,7 @@ buildscript {
 plugins {
     id 'base'
     id 'com.dorongold.task-tree' version '2.1.0'
-    id 'org.nosphere.apache.rat' version '0.7.1'
+    id 'org.nosphere.apache.rat' version '0.8.0'
     id 'distribution'
     id "com.github.spotbugs" version '5.0.12'
     id 'de.thetaphi.forbiddenapis' version '3.3'