fix: validate staking amount while filling the form (#70) #30

Job	Run time
lint_test / build	1m 31s
docker_build (devnet)	2m 0s
docker_build (staging)	1m 54s
docker_build (testnet)	1m 47s
docker_build (mainnet-private)	1m 52s
docker_build (mainnet)	1m 39s
dockerhub_publish (devnet)	25s
dockerhub_publish (staging)	25s
dockerhub_publish (testnet)	26s
dockerhub_publish (mainnet-private)	17s
dockerhub_publish (mainnet)	15s
ecr_publish (devnet)	33s
ecr_publish (staging)	33s
ecr_publish (testnet)	33s
ecr_publish (mainnet-private)	32s
ecr_publish (mainnet)	33s
	15m 15s

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