Other translations carrying the meaning of "ليحُجّوا" < ----- " וְיָחֹגּוּ " :

ISV
After Moses and Aaron arrived, they told Pharaoh, “This is what the Lord God
of Israel says: ‘Let my people go so they may make a pilgrimage for me in the desert.’”



TLB

After this presentation to the elders, Moses and Aaron went to see Pharaoh. They told him, “We bring you a message from Jehovah, the God of Israel. He says, ‘Let my people go, for they must make a holy pilgrimage out into the wilderness, for a religious feast, to worship me there.’”



NET

Afterward Moses and Aaron went to Pharaoh and said, “Thus says the Lord, the God of Israel, ‘Release my people so that they may hold a pilgrim feast to me in the desert.’”