Update packet.cc #8641

Job	Run time
classicmode_1d_3dgrid	7m 53s
classicmode_3d	7m 10s
kilonova_1d_1dgrid	4m 28s
kilonova_1d_3dgrid	4m 25s
kilonova_2d_2dgrid	6m 9s
kilonova_2d_2dgrid_barnesthermalisation	4m 58s
kilonova_2d_2dgrid_expansionopac	4m 27s
kilonova_2d_2dgrid_xcomgammaphotoion	4m 49s
kilonova_2d_3dgrid	6m 29s
nebular_1d_3dgrid	11m 14s
nebular_1d_3dgrid_limitbfest	13m 20s
combine_checksums	17s
	1h 15m 39s

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