They might get only cancelled if any of the players or the members of the squad becomes positive. For now, everything is going smooth and I hope it remains like this only. IPL would have to be postponed once again because the daily positivity rate has started rising in India and by February end it will peak according to a report. If that is the case then it would be hard for BCCI to conduct IPL between March till June.
Cricket should learn how to live with covid. AFAIK covid is going no where and there is realization among boards that cricket should go on with precautionary measures. All three test series right now are in progress and there is no news of cancelation. Even if some player caught with covid, he must be replaced rather then canceling the series.