Upgrade to JUnit 6.1

Closes gh-36815

Author: sbrannen

build.gradle

@@ -78,7 +78,7 @@ configure([rootProject] + javaProjects) { project ->
 		"https://projectreactor.io/docs/core/release/api/",
 		"https://projectreactor.io/docs/test/release/api/",
 		"https://junit.org/junit4/javadoc/4.13.2/",
-		"https://docs.junit.org/6.0.3/api/",
+		"https://docs.junit.org/6.1.0/api/",
 		"https://www.reactive-streams.org/reactive-streams-1.0.4-javadoc/",
 		"https://r2dbc.io/spec/1.0.0.RELEASE/api/",
 		"https://jspecify.dev/docs/api/"

framework-platform/framework-platform.gradle

@@ -19,7 +19,7 @@ dependencies {
 	api(platform("org.eclipse.jetty.ee11:jetty-ee11-bom:12.1.9"))
 	api(platform("org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.10.2"))
 	api(platform("org.jetbrains.kotlinx:kotlinx-serialization-bom:1.11.0"))
-	api(platform("org.junit:junit-bom:6.0.3"))
+	api(platform("org.junit:junit-bom:6.1.0"))
 	api(platform("org.mockito:mockito-bom:5.23.0"))
 	api(platform("tools.jackson:jackson-bom:3.1.1"))
 

spring-test/src/test/java/org/springframework/test/context/junit/jupiter/parallel/ParallelExecutionSpringExtensionTests.java

@@ -58,6 +58,7 @@ void runTestsInParallel() {
 				.configurationParameter("junit.jupiter.conditions.deactivate", "org.junit.jupiter.engine.extension.DisabledCondition")//
 				.configurationParameter("junit.jupiter.execution.parallel.enabled", "true")//
 				.configurationParameter("junit.jupiter.execution.parallel.config.dynamic.factor", "10")//
+				.configurationParameter("junit.jupiter.execution.parallel.config.executor-service", "WORKER_THREAD_POOL")
 				.selectors(selectClass(TestCase.class))//
 				.build();