Upgrade to the latest version of kubernetes-client

kubernetes-client `5.12.4` -> `6.5.1`

Author: JamesMcNee

build.gradle

@@ -63,7 +63,7 @@ ext {
 dependencies {
     compileOnly project.deps.gocdPluginApi
     implementation group: 'com.google.code.gson', name: 'gson', version: '2.10.1'
-    implementation group: 'io.fabric8', name: 'kubernetes-client', version: '5.12.4'
+    implementation group: 'io.fabric8', name: 'kubernetes-client', version: '6.5.1'
     implementation group: 'com.github.spullara.mustache.java', name: 'compiler', version: '0.9.10'
     implementation group: 'org.freemarker', name: 'freemarker', version: '2.3.32'