Bump github.com/decred/dcrd/dcrec/secp256k1/v4 from 4.3.0 to 4.4.0 in /rmb-sdk-go #6035

Job	Run time
build (activation-service)	25s
build (farmerbot)	30s
build (grid-cli)	30s
build (grid-proxy)	33s
build-docker (activation-service)	32s
build (gridify)	34s
build-docker (farmerbot)	18s
build (monitoring-bot)	34s
build-docker (grid-cli)	17s
build (user-contracts-mon)	20s
build-docker (grid-proxy)	19s
build (tfrobot)	29s
build-docker (gridify)	27s
build-docker (monitoring-bot)	17s
build-docker (user-contracts-mon)	34s
build-docker (tfrobot)	18s
	6m 57s

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