bump up version 1.7.16 #394

Job	Run time
build (metro_m0)	1m 55s
build (hallowing)	1m 48s
build (circuitplayground_m0)	1m 47s
build (metro_m4)	1m 56s
build (pybadge_m4)	1m 56s
build (pygamer_m4)	1m 48s
build (hallowing_m4)	1m 48s
build (pyportal_m4)	1m 48s
build (pyportal_m4_titano)	1m 51s
build (feather_m4_can)	1m 58s
build (metro_m0:usbstack=tinyusb)	5m 23s
build (metro_m4:speed=120,usbstack=tinyusb)	5m 57s
	29m 55s

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