Sync gps time every 30min #68

Job	Run time
build (RAK_4631_repeater)	2m 11s
build (Heltec_v3_companion_radio_ble)	2m 50s
build (Heltec_v3_room_server)	2m 48s
build (Heltec_v3_repeater)	2m 49s
build (RAK_4631_room_server)	2m 10s
build (RAK_4631_companion_radio_ble)	2m 10s
build (PicoW_repeater)	2m 40s
build (wio-e5-mini_repeater)	1m 35s
build (LilyGo_Tlora_C6_repeater_)	1m 56s
	21m 9s

Provide feedback