Bump golang.org/x/crypto from 0.28.0 to 0.31.0 in /grid-client #5649

Job	Run time
build (activation-service)	43s
build (farmerbot)	21s
build (grid-cli)	24s
build (grid-proxy)	40s
build (gridify)	33s
build-docker (activation-service)	34s
build (monitoring-bot)	26s
build (user-contracts-mon)	21s
build-docker (farmerbot)	31s
build (tfrobot)	31s
build-docker (grid-cli)	18s
build-docker (grid-proxy)	49s
build-docker (gridify)	24s
build-docker (monitoring-bot)	36s
build-docker (user-contracts-mon)	39s
build-docker (tfrobot)	33s
	8m 23s

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