Add Korean language for "Cannot reuse the same passcode"

[dobiho5]

This key is absent in Korean strings. Would you add this key string? "Cannot reuse the same passcode" = "이전에 사용한 암호를 재사용할 수 없습니다.";

[rolandleth]

Hey, thanks for the issue! Not sure when I'll have time in the near future, but a PR is welcome!