Hi , I am just about move flat (rented) and I am going to be unplumbing a dishwasher to take with me. When it was installed the plumber made a hole in the side of the under sink kitchen cabinet (pine coloured) to thread through the waste and water pipe. I need to repair / fill in this hole now I am moving , the hole is 40mm in diameter and 18 mm in depth. It’s highly unlikely the repair will need to be drilled or screwed into and will need to take no weight. What would be the best and quickest method to fill this hole in ?