Update springcloud/spring-cloud-kubernetes-discoveryserver Docker tag to v3.1.4

Author: renovate[bot]

kubernetes/helm-charts/spring-cloud-kubernetes-discoveryserver/values.yaml

@@ -3,7 +3,7 @@ namespace: default
 
 deployment:
   # https://hub.docker.com/r/springcloud/spring-cloud-kubernetes-discoveryserver/tags
-  image: springcloud/spring-cloud-kubernetes-discoveryserver:3.1.1
+  image: springcloud/spring-cloud-kubernetes-discoveryserver:3.1.4
   pullPolicy: IfNotPresent
   updateStrategy: RollingUpdate
   maxSurge: 100%