Upgrade Versions; Prepare for Milestone Release

Author: garyrussell

build.gradle

@@ -55,26 +55,26 @@ ext {
 			files(grgit.status().unstaged.modified).filter{ f -> f.name.endsWith('.java') || f.name.endsWith('.kt') }
 	}
 
-	assertjVersion = '3.22.0'
+	assertjVersion = '3.23.1'
 	awaitilityVersion = '4.2.0'
 	googleJsr305Version = '3.0.2'
 	hamcrestVersion = '2.2'
 	hibernateValidationVersion = '7.0.4.Final'
-	jacksonBomVersion = '2.13.3'
+	jacksonBomVersion = '2.13.4'
 	jaywayJsonPathVersion = '2.6.0'
 	junit4Version = '4.13.2'
-	junitJupiterVersion = '5.8.2'
+	junitJupiterVersion = '5.9.0'
 	kafkaVersion = '3.2.2'
-	log4jVersion = '2.17.2'
-	micrometerVersion = '1.10.0-SNAPSHOT'
-	micrometerTracingVersion = '1.0.0-SNAPSHOT'
+	log4jVersion = '2.18.0'
+	micrometerVersion = '1.10.0-M6'
+	micrometerTracingVersion = '1.0.0-M8'
 	mockitoVersion = '4.5.1'
-	reactorVersion = '2020.0.19'
+	reactorVersion = '2022.0.0-M6'
 	scalaVersion = '2.13'
-	springBootVersion = '2.6.7' // docs module
-	springDataVersion = '2022.0.0-M5'
-	springRetryVersion = '1.3.3'
-	springVersion = '6.0.0-SNAPSHOT'
+	springBootVersion = '2.6.11' // docs module
+	springDataVersion = '2022.0.0-M6'
+	springRetryVersion = '2.0.0-M1'
+	springVersion = '6.0.0-M6'
 	zookeeperVersion = '3.6.3'
 
 	idPrefix = 'kafka'

spring-kafka/src/test/java/org/springframework/kafka/listener/adapter/KafkaBackoffAwareMessageListenerAdapterTests.java

@@ -81,7 +81,7 @@ class KafkaBackoffAwareMessageListenerAdapterTests {
 	@Mock
 	private KafkaConsumerBackoffManager kafkaConsumerBackoffManager;
 
-	private KafkaConsumerBackoffManager.Context context = mock(KafkaConsumerBackoffManager.Context.class);
+	private final KafkaConsumerBackoffManager.Context context = mock(KafkaConsumerBackoffManager.Context.class);
 
 	private final Clock clock = Clock.fixed(Instant.EPOCH, ZoneId.systemDefault());
 
@@ -166,7 +166,7 @@ void shouldWrapExceptionInTimestampedException() {
 
 		// when
 		assertThatThrownBy(() -> backoffAwareMessageListenerAdapter.onMessage(data))
-				.isExactlyInstanceOf(TimestampedException.class).getCause().isEqualTo(thrownException);
+				.isExactlyInstanceOf(TimestampedException.class).cause().isEqualTo(thrownException);
 
 		// then
 		then(kafkaConsumerBackoffManager).should(times(1))