Jon Pardi is getting married soon…Lady A is feeling the Christmas music.. It looks like Jon Pardi's wedding to his fiancée Summer will take place next month. Jon posted the news on Instagram, writing, "Next month, I love you." Summer posted a caption on her own page, saying, "Let the countdown begin."Their original summer nuptials were postponed due to the pandemic. Lady A will release a deluxe version of their holiday album On This Winter's Night on Friday. The new edition features four new tracks,…