allow longer timeout for chain generation #79

Job	Run time
ci / Build	3m 34s
ci / Lint	1m 4s
ci / Test (0)	1m 8s
ci / Test (1)	1m 38s
ci / Test (2)	3m 2s
ci / Test (3)	1m 35s
ci / Test (4)	1m 16s
ci / Test (5)	1m 8s
ci / Test (6)	1m 29s
ci / Test (7)	1m 14s
ci / Test (8)	2m 14s
ci / Test (9)	1m 22s
ci / Publish Unit Tests Results	1s
	20m 45s

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