I am not sure if there is such code published, but you can look for similar works: https://www.researchgate.net/publication/222419741_Extended_ant_colony_optimization_for_non-convex_mixed_integer_nonlinear_programming
or you could also contact the authors to send any code they used.
Article A Simulated Annealing Approach to the Solution of MINLP Problems
Article Ant Colony Optimization for Continuous and Mixed-Variable Domains
Article Extended ant colony optimization for non-convex mixed intege...