Fix federation error when remote object already exists

[Starefossen]

2023-08-14T14:38:16Z    ERROR   subscribe       nack message    {"error": "secrets \"unleasherator-team1-xxxxxxxx\" already exists"}
github.com/nais/unleasherator/pkg/federation.(*subscriber).Subscribe.func1
        /workspace/pkg/federation/subscriber.go:47
cloud.google.com/go/pubsub.(*Subscription).Receive.func2.2
        /go/pkg/mod/cloud.google.com/go/[email protected]/subscription.go:1410
cloud.google.com/go/pubsub/internal/scheduler.(*ReceiveScheduler).Add.func2
        /go/pkg/mod/cloud.google.com/go/[email protected]/internal/scheduler/receive_scheduler.go:97
cloud.google.com/go/pubsub/internal/scheduler.(*ReceiveScheduler).Add.func3
        /go/pkg/mod/cloud.google.com/go/[email protected]/internal/scheduler/receive_scheduler.go:126