Combine the base of the soup: Stir in the garlic and cook for another 30 seconds until aromatic. Add the cauliflower, potatoes, corn, diced tomates, Italian seasoning, kidney beans, bay leave, lemon juice, vegetable broth, salt, pepper, vegetable buillon powder and stir well to combine. Bring to a boil then reduce heat to medium and cook for 20 minutes. Stir in the zucchini and cook for another 5 minutes. Taste for seasoning and adjust with salt and pepper as necessary.