update test assertion (#6456)

This version was released 3 hours age and making the tests fail.

Author: Jenson3210

rewrite-maven/src/test/java/org/openrewrite/maven/ChangeParentPomTest.java

@@ -1462,7 +1462,7 @@ void doesNotBringInMavenArguments() {
                     <parent>
                       <groupId>org.springframework.boot</groupId>
                       <artifactId>spring-boot-starter-parent</artifactId>
-                      <version>3.5.8</version>
+                      <version>3.5.9</version>
                     </parent>
                   </project>
                   """