Upgrade dependencies including Gradle

* Fix `rawtypes` warning in the `PartitionedChannelTests`
* Fix deprecation warning in the `KafkaMessageSource`
* Remove JUnit 4 classes and dependency
*

Author: artembilan

build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlinVersion = '2.2.21'
+    ext.kotlinVersion = '2.3.0'
     ext.isCI = System.getenv('GITHUB_ACTION')
     repositories {
         gradlePluginPortal()
@@ -77,7 +77,6 @@ ext {
     jpaApiVersion = '3.2.0'
     jrubyVersion = '10.0.2.0'
     jsonpathVersion = '2.10.0'
-    junit4Version = '4.13.2'
     junitJupiterVersion = '6.0.1'
     junitPioneerVersion = '2.3.0'
     kotlinCoroutinesVersion = '1.10.2'
@@ -101,7 +100,7 @@ ext {
     rsocketVersion = '1.1.5'
     servletApiVersion = '6.1.0'
     smackVersion = '4.4.8'
-    springAmqpVersion = '4.0.1'
+    springAmqpVersion = '4.1.0-SNAPSHOT'
     springDataVersion = '2025.1.1'
     springGraphqlVersion = '2.0.1'
     springKafkaVersion = '4.0.1'
@@ -326,7 +325,7 @@ configure(javaProjects) { subproject ->
 
     checkstyle {
         configDirectory.set(rootProject.file('src/checkstyle'))
-        toolVersion = project.hasProperty('checkstyleVersion') ? project.checkstyleVersion : '12.1.2'
+        toolVersion = project.hasProperty('checkstyleVersion') ? project.checkstyleVersion : '12.3.0'
     }
 
     jar {
@@ -434,9 +433,7 @@ project('spring-integration-test-support') {
         api 'org.springframework:spring-context'
         api 'org.springframework:spring-messaging'
         api 'org.springframework:spring-test'
-        optionalApi("junit:junit:$junit4Version") {
-            exclude group: 'org.hamcrest'
-        }
+
         optionalApi 'org.junit.jupiter:junit-jupiter-api'
         optionalApi 'org.apache.logging.log4j:log4j-core'
     }

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=df67a32e86e3276d011735facb1535f64d0d88df84fa87521e90becc2d735444
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
+distributionSha256Sum=72f44c9f8ebcb1af43838f45ee5c4aa9c5444898b3468ab3f4af7b6076c5bc3f
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

spring-integration-core/src/test/java/org/springframework/integration/channel/PartitionedChannelTests.java

@@ -154,6 +154,7 @@ public void afterMessageHandled(Message<?> message, MessageChannel ch, MessageHa
 	PartitionedChannel testChannel;
 
 	@Test
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	void messagesArePartitionedByCorrelationId() {
 		this.inputChannel.send(new GenericMessage<>(IntStream.range(0, 5).toArray()));
 
@@ -164,7 +165,6 @@ void messagesArePartitionedByCorrelationId() {
 				.asInstanceOf(InstanceOfAssertFactories.LIST)
 				.hasSize(5);
 
-		@SuppressWarnings("unchecked")
 		Set<String> strings = new HashSet<>((Collection<? extends String>) receive.getPayload());
 		assertThat(strings).hasSize(1)
 				.allMatch(value -> value.startsWith("testChannel-partition-thread-"));

spring-integration-kafka/src/main/java/org/springframework/integration/kafka/inbound/KafkaMessageSource.java

@@ -625,10 +625,10 @@ record = this.recordsIterator.next();
 
 	private Object recordToMessage(ConsumerRecord<K, V> record) {
 		if (record.value() == null && this.checkNullValueForExceptions) {
-			checkDeserializationException(record, SerializationUtils.VALUE_DESERIALIZER_EXCEPTION_HEADER);
+			checkDeserializationException(record, KafkaUtils.VALUE_DESERIALIZER_EXCEPTION_HEADER);
 		}
 		if (record.key() == null && this.checkNullKeyForExceptions) {
-			checkDeserializationException(record, SerializationUtils.KEY_DESERIALIZER_EXCEPTION_HEADER);
+			checkDeserializationException(record, KafkaUtils.KEY_DESERIALIZER_EXCEPTION_HEADER);
 		}
 
 		TopicPartition topicPartition = new TopicPartition(record.topic(), record.partition());