upgrad demo-app to nginx 1.27.5

apps/demo-app/base/deployment.yaml

@@ -14,6 +14,6 @@ spec:
     spec:
       containers:
         - name: demo-app
-          image: docker.m.daocloud.io/library/nginx:1.27-alpine
+          image: docker.m.daocloud.io/library/nginx:1.27.5-alpine
           ports:
             - containerPort: 80