caliper brackets clean after the shot blast

have stumbled on an issue
looks like some one dont know how to pull the spring clips out
all the holes have been drilled and had broken clips in the holes

tapped the cut of bits out with a 2mm punch real easy

but now left with the aftermath and the repair job


do i drill them out to 5.5mm and fit some m6 alloy bolts then redrill the holes or use metal filler :confused:
also new biggred seal repair kit on its way