SIMPL-10085 added disable/enable kc user endpoints

Description

Description of the MR

Merge Request Checklists

• I have already covered the unit testing
• Logical data model has been updated
• Deployment documentation has been updated

Optional Additional notes

src/main/java/eu/europa/ec/simpl/usersroles/configurations/ClientConfig.java

@@ -84,7 +84,7 @@ public class ClientConfig {
                 KeyPairExchange.class);
     }
 
-    private <E> E buildExchange(URI baseurl, RestClient.Builder restClientBuilder, Class<E> clazz) {
+    private static <E> E buildExchange(URI baseurl, RestClient.Builder restClientBuilder, Class<E> clazz) {
         var restClient = restClientBuilder
                 .baseUrl(baseurl)
                 .requestFactory(new JdkClientHttpRequestFactory())