chore(build): update JDK to 21 and upgrade Gradle configuration (#7)

* chore(build): update JDK to 21 and upgrade Gradle configuration

* chore(build): generate gradlew

Author: antofrs

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,8 @@
+val jvmVersion = 21
+
 plugins {
     // Apply the org.jetbrains.kotlin.jvm Plugin to add support for Kotlin.
-    id("org.jetbrains.kotlin.jvm") version "1.8.10"
+    id("org.jetbrains.kotlin.jvm") version "2.2.20"
 
     // Apply the java-library plugin for API and implementation separation.
     `java-library`
@@ -48,15 +50,12 @@ publishing {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
     withJavadocJar()
     withSourcesJar()
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-    kotlinOptions {
-        jvmTarget = "17"
-    }
+kotlin {
+    jvmToolchain(jvmVersion)
 }
-