Use foojay-resolver and set all java version to 21

build.gradle

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     ext {
@@ -31,14 +33,3 @@ repositories {
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
 }
-
-compileKotlin {
-    kotlinOptions {
-        jvmTarget = "17"
-    }
-}
-compileTestKotlin {
-    kotlinOptions {
-        jvmTarget = "17"
-    }
-}