According to the official patch notes on SteamDB , this update primarily focused on:
Addressing various gameplay glitches and stability issues reported since the game's launch. Card.Shark.Build.8948588.zip
Compressed files from unofficial sources frequently contain malware or trojans bundled with the game data. According to the official patch notes on SteamDB
For a safe and updated experience, it is best to access the game through official storefronts like Steam or GOG . Card Shark Version 1.2 and Fan Art! - SteamDB Card.Shark.Build.8948588.zip