Yes MCA (Micronized Copper Azole)-treated wood is generally considered safe for vegetable gardens. It s seen as less harmful than older treatments such as chromated copper arsenate (CCA).
However it s good to be careful. Copper from the treated wood can leak into the soil which might harm plants and possibly affect food safety if the levels get too high. Think about using different materials or lining raised beds with a barrier to keep copper away from the soil.