Upgrade dependencies; prepare for release

This includes moving to JUnit 6, with respective Nullability fix in the `LogLevelsCondition`

Author: artembilan

build.gradle

@@ -42,20 +42,20 @@ ext {
 	jacksonBomVersion = '2.20.0'
 	jackson3Version = '3.0.0-rc9'
 	jaywayJsonPathVersion = '2.9.0'
-	junitJupiterVersion = '5.13.4'
+	junitJupiterVersion = '6.0.0-RC2'
 	kotlinCoroutinesVersion = '1.10.2'
 	log4jVersion = '2.25.1'
 	logbackVersion = '1.5.18'
 	micrometerDocsVersion = '1.0.4'
-	micrometerVersion = '1.16.0-SNAPSHOT'
-	micrometerTracingVersion = '1.6.0-M2'
+	micrometerVersion = '1.16.0-M3'
+	micrometerTracingVersion = '1.6.0-M3'
 	mockitoVersion = '5.19.0'
 	rabbitmqAmqpClientVersion = '0.7.0'
 	rabbitmqStreamVersion = '1.2.0'
 	rabbitmqVersion = '5.26.0'
-	reactorVersion = '2025.0.0-M6'
-	springDataVersion = '2025.1.0-SNAPSHOT'
-	springVersion = '7.0.0-SNAPSHOT'
+	reactorVersion = '2025.0.0-M7'
+	springDataVersion = '2025.1.0-M6'
+	springVersion = '7.0.0-M9'
 	testcontainersVersion = '1.21.3'
 
 	javaProjects = subprojects - project(':spring-amqp-bom')
@@ -266,7 +266,7 @@ configure(javaProjects) { subproject ->
 
 	checkstyle {
 		configDirectory.set(rootProject.file('src/checkstyle'))
-		toolVersion = '10.25.0'
+		toolVersion = '11.0.1'
 	}
 
 	jar {
@@ -465,7 +465,6 @@ project('spring-rabbit-junit') {
 		optionalApi 'org.testcontainers:junit-jupiter'
 		optionalApi "ch.qos.logback:logback-classic:$logbackVersion"
 		optionalApi 'org.apache.logging.log4j:log4j-core'
-		compileOnly 'org.apiguardian:apiguardian-api:1.0.0'
 	}
 }
 

spring-rabbit-junit/src/main/java/org/springframework/amqp/rabbit/junit/LogLevelsCondition.java

@@ -127,7 +127,9 @@ public void afterAll(ExtensionContext context) {
 		LogLevels logLevels = store.remove(STORE_ANNOTATION_KEY, LogLevels.class);
 		if (logLevels != null) {
 			LevelsContainer container = store.get(STORE_CONTAINER_KEY, LevelsContainer.class);
-			JUnitUtils.revertLevels(context.getDisplayName(), container);
+			if (container != null) {
+				JUnitUtils.revertLevels(context.getDisplayName(), container);
+			}
 			store.remove(STORE_CONTAINER_KEY);
 		}
 		this.loggedMethods.clear();