Is it permissible for me to work in a company that has started selling prohibited items like pork and alcohol, knowing that my job is not directly related to the sale of these products?

If the air conditioning provided by the company is limited to the administration offices, employee offices, and areas free of alcohol and pork, then working there is permissible, or at worst, disliked. However, if the air conditioning extends to places where alcohol and pork are sold and their storage facilities, then working there is forbidden because it is assisting in sin, as Allah Almighty says: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression).