run tests on JDK 21

Author: whyoleg

.github/actions/setup-gradle/action.yml

@@ -32,7 +32,7 @@ runs:
           8
           11
           17
-          20
+          21
     - name: Setup gradle
       uses: gradle/gradle-build-action@v2
       with:

.github/workflows/run-tests.yml

@@ -13,10 +13,7 @@ jobs:
         uses: gradle/gradle-build-action@v2
         with:
           arguments: |
-            jvmTest
-            jvm11Test
-            jvm17Test
-            jvm20Test
+            jvmAllTest
             --scan
             --info
             --continue

gradle/plugins/build-logic/src/main/kotlin/rsocket.target.jvm.gradle.kts

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,13 +14,15 @@
  * limitations under the License.
  */
 
+import org.jetbrains.kotlin.gradle.targets.jvm.tasks.*
+
 plugins {
     id("rsocket.multiplatform")
 }
 
 kotlin {
     jvm {
-        listOf(11, 17, 20).forEach { jdkVersion ->
+        listOf(11, 17, 21).forEach { jdkVersion ->
             testRuns.create("${jdkVersion}Test") {
                 executionTask.configure {
                     javaLauncher.set(
@@ -40,3 +42,8 @@ kotlin {
         }
     }
 }
+
+tasks.register("jvmAllTest") {
+    group = "verification"
+    dependsOn(tasks.withType<KotlinJvmTest>())
+}