feat: updated to gradle 9.

Author: jrfaller

client/src/main/java/com/github/gumtreediff/client/Register.java

@@ -40,6 +40,7 @@
     Class<? extends Option.Context> options() default NoOption.class;
 
     String no_value = "";
+
     class NoOption implements Option.Context {
         @Override
         public Option[] values() {

core/src/main/java/com/github/gumtreediff/tree/TreeMetricComputer.java

@@ -93,8 +93,8 @@ private static int innerNodeHash(Tree tree, int size, int middleHash) {
 
     private static int innerNodeStructureHash(Tree tree, int size, int middleHash) {
         return Objects.hash(tree.getType(), ENTER)
-               + middleHash
-               + Objects.hash(tree.getType(), LEAVE) * hashFactor(size);
+                + middleHash
+                + Objects.hash(tree.getType(), LEAVE) * hashFactor(size);
     }
 
     private static int leafHash(Tree tree) {

dist-minimal/build.gradle

@@ -1,6 +1,6 @@
 plugins {
 	id 'java-conv'
-	id 'com.gradleup.shadow' version '8.3.5'
+	id 'com.gradleup.shadow' version '9.0.0-rc3'
 	id 'application'
 }
 

dist/build.gradle

@@ -1,6 +1,6 @@
 plugins {
 	id 'java-conv'
-	id 'com.gradleup.shadow' version '8.3.5'
+	id 'com.gradleup.shadow' version '9.0.0-rc3'
 	id 'application'
 }
 

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME