Oh, I don’t know. They don’t look that bad. Just a little soap and water.
Seriously, unless some inspector says they need replaced, I wouldn’t do it unless it is a requirement to sell.
Buyers request different things - sometimes they don’t ask for the obvious.
And if they do, just offer to take 3/4 of the total price off in the negotiations. Let them do it.
Recommend you get a few 90 day bids from local handymen and attach the bids to the property disclosure statement with a note you are willing to split the cost 50/50 (you are not selling a new house).
Alternatively, set the price you would be willing to sell for, add 5%, list the house "as-is" and be willing to negotiate with a bona fide buyer.
I would be more inclined to spruce up the landscaping/curb appeal than make significant repairs.