Specify OSX deployment target for python package. (#3194) (#3279) #153

Job	Run time
generate-matrix / generate	8s
pytorch/executorch / wheel-py3_8-cpu	1m 47s
pytorch/executorch / wheel-py3_9-cpu	2m 17s
pytorch/executorch / wheel-py3_10-cpu	6m 20s
pytorch/executorch / wheel-py3_11-cpu	5m 56s
pytorch/executorch / wheel-py3_12-cpu	6m 26s
pytorch/executorch / upload / wheel-py3_8-cpu	12s
pytorch/executorch / upload / wheel-py3_9-cpu	14s
pytorch/executorch / upload / wheel-py3_10-cpu	16s
pytorch/executorch / upload / wheel-py3_11-cpu	26s
pytorch/executorch / upload / wheel-py3_12-cpu	23s
	24m 25s

Provide feedback