Is avoiding the receipt of money allocated for a scholarship, and instead receiving a gift, with the aim of circumventing the fulfillment of a vow to donate half of the amount that would have been received, considered a deception against Allah?

"Wealth" in Islamic law encompasses everything that is monetized, whether cash or in-kind. If you intended only money with your vow, then you are not obligated to give any in-kind gifts as charity, because the intention of the vow-maker is the reference point for the vow. There is no harm in your parents giving an in-kind gift instead of a cash gift. However, if you did not specify your vow to be only cash, but rather your vow, according to the apparent meaning of the word, applied to all wealth, then you are obligated to give half of the in-kind gifts you receive as charity. If it is not possible to divide them, you should give half of their value as charity. Some scholars have held that whoever vows to give a specific item as charity may give its value as charity, or sell it and give its price as charity.