introduced Config.SetSecretRE to allow users to define their own secret regex
per instance

extended HideSecrets to now need a regex to match secrets, the old behavior
can be achieved as follows:

func HideSecretsOld(node *yaml.Node, hideStructure bool) {
    HideSecrets(node, hideStructure, regexp.MustCompile(templig.SecretDefaultRE))
}

As we did not yet reach version 1.0, this breaking change is acceptable. Note that
from version 1.0 on, this would not be accepted.

dependency updates