Update robots.txt (#366) #1

Job	Run time
Github \| Docker	57m 43s
Github (ubuntu, mpi, debug, true)	50m 38s
Georgia Tech \| Phoenix (NVHPC)	0s
Github (ubuntu, mpi, debug, false)	41m 39s
Github (ubuntu, mpi, no-debug, true)	57m 46s
Github (ubuntu, mpi, no-debug, false)	59m 2s
Github (ubuntu, no-mpi, debug, true)	24m 25s
Github (ubuntu, no-mpi, debug, false)	18m 51s
Github (ubuntu, no-mpi, no-debug, true)	33m 27s
Github (ubuntu, no-mpi, no-debug, false)	20m 28s
Github (macos, mpi, debug, false)	1h 5m 13s
Github (macos, mpi, no-debug, false)	49m 46s
Github (macos, no-mpi, debug, false)	9m 3s
Github (macos, no-mpi, no-debug, false)	21m 29s
	8h 29m 30s

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