Update io.fabric8:kubernetes-client-bom to version 6.13.4 (#189)

Author: asf-rm

log4j-spring-cloud-config-sample-application/pom.xml

@@ -38,7 +38,7 @@
     <project.build.outputTimestamp>2023-09-14T15:03:45Z</project.build.outputTimestamp>
 
     <!-- Dependency versions -->
-    <kubernetes-client.version>6.13.3</kubernetes-client.version>
+    <kubernetes-client.version>6.13.4</kubernetes-client.version>
   </properties>
 
   <dependencyManagement>