If you are on PC or MAC you have nothing to worry, saves are backed up inside and outside the game folder (double backup), so it will be automatcally available, even if you accidentally delete the old game folder. If you are using the launcher just run the update patch ad game update will happen in same folder.
But if you are on Android, and if you face issue with updating the game and needs to be reinstall after uninstalling previous version, Follow this link for how to get the backup https://cor.fandom.com/wiki/Installation