Fix no cached repository found when push with dependencies update

[cnfatal]

Fixed the push with update-dependencies error:

$ helm cm-push -d -f my-chart <some-chartmuseum>
Getting updates for unmanaged Helm repositories...
...Successfully got an update from the "https://charts.bitnami.com/bitnami" chart repository
Error: no cached repository for helm-manager-54d2620bbb6f1bb3f35d4c7f945bfa25077949488dcbb0a4d01c90f2c35baa59 found. (try 'helm repo update'): open helm-manager-54d2620bbb6f1bb3f35d4c7f945bfa25077949488dcbb0a4d01c90f2c35baa59-index.yaml: no such file or directory
Usage:
  helm cm-push [flags]
...