[bug-66644] enable reproducible build settings in gradle

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1910364 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

 
 
 wrapper {
-    gradleVersion = '8.0.1'
+    gradleVersion = '8.1.1'
 }
 
 task adjustWrapperPropertiesFile {
     tasks.withType(Javadoc) {
         options.encoding = 'UTF-8'
     }
+    tasks.withType(AbstractArchiveTask).configureEach {
+        preserveFileTimestamps = false
+        reproducibleFileOrder = true
+    }
 
     repositories {
         mavenCentral()