OZG-3961 extract secret logic; update dependencies

pom.xml

...oud/operator/keycloak/user/KeycloakUserRemoteService.java

.../ozgcloud/operator/keycloak/user/KeycloakUserService.java

...cloud/operator/keycloak/user/KubernetesRemoteService.java

...de/ozgcloud/operator/keycloak/user/UserSecretService.java

...loud/operator/keycloak/user/UserUpdateControlBuilder.java

...operator/keycloak/user/KeycloakUserRemoteServiceTest.java

...cloud/operator/keycloak/user/KeycloakUserServiceTest.java

...zgcloud/operator/keycloak/user/UserSecretServiceTest.java