Bump golang.org/x/crypto from 0.28.0 to 0.31.0 in /grid-client #5647

Job	Run time
build-docker (activation-service)	56s
build (activation-service)	1m 13s
build-docker (farmerbot)	32s
build (farmerbot)	23s
build-docker (grid-cli)	22s
build (grid-cli)	26s
build-docker (grid-proxy)	47s
build-docker (gridify)	19s
build (grid-proxy)	39s
build-docker (monitoring-bot)	41s
build (gridify)	29s
build-docker (user-contracts-mon)	1m 15s
build (monitoring-bot)	33s
build-docker (tfrobot)	19s
build (user-contracts-mon)	1m 0s
build (tfrobot)	29s
	10m 23s

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