Just pull your pan, drill to the next larger tap drill size, tap the fresh hole with the correct size tap install a short thread bolt of the same thread pitch and diameter, clean the metal chips out of the pan reassemble and don't worry be happy.
When you tap or drill and tap with the pan on the engine you will put drilling or tapping metal chips in the pan. The
oil pump will pick them up, run them through its gears doing some level of damage then flush them on up to the
oil filter.
Oil filters do not filter 100% of the oil sent to them. The have a bypass valve built in that bypasses a very significant amount of the oil sent to them on each cycle.
If the chips in the bottom of the pan go to the oil filter and get bypassed, their next stop is your engine bearings and well, we sort of know how that story ends.
Ed