fix(vpc): fix nil pointer dereference on redis endpoint (#3179)

Author: yfodil

internal/namespaces/vpc/v1/custom_private_network.go

@@ -288,7 +288,7 @@ func listCustomRedisClusters(client *scw.Client, pn *vpc.PrivateNetwork) ([]cust
 	var customClusters []customRedis
 	for _, cluster := range listRedisClusters.Clusters {
 		for _, endpoint := range cluster.Endpoints {
-			if endpoint.PrivateNetwork.ID == pn.ID {
+			if endpoint.PrivateNetwork != nil && endpoint.PrivateNetwork.ID == pn.ID {
 				customClusters = append(customClusters, customRedis{
 					ID:         cluster.ID,
 					Name:       cluster.Name,