If you play on pc just update the game by deleting the old ver (or not deleting old ones if you want to collect all version lol) and extracting the new ver, the save will not be deleted because the save is located on different path
If you play on android just install apk of the new ver, it will overwrite the game to the new version, the save should not be affected. But if you accidentally delete the game on android the save will also deleted so becareful