Archives are private, high rate of moderated messages. https://lists.wikimedia.org/mailman/listinfo/wikisk-l shows no administrator. If it is used, (doubtful - check archives) then a local user from sk.wikipedia.org should be asked to take over or close it.
Looking at the issue, @KuboF seems to suggests [gtranslate] the list is not in active use and that he also has no time to manage the list if he was given it. As such, given no real community interest - I'm going to close the list. It can be reopened at any time if someone is interested in managing the list however.