Bump io.spring.javaformat:spring-javaformat-checkstyle from 0.0.42 to 0.0.43

spring-session-samples/spring-session-sample-boot-mongodb-reactive/src/test/java/org/springframework/session/mongodb/examples/AttributeTests.java

@@ -37,7 +37,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Yanming Zhou
  */
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-public class AttributeTests {
+class AttributeTests {
 
 	@LocalServerPort
 	int port;