Reduce staking rewards to 26 percentage (#728) #518

Job	Run time
Deploy image (bluebell-playground)	8m 11s
Deploy image (devex-apollo)	41s
Deploy image (dev-wallet)	49s
Deploy image (faucet-service)	52s
Deploy image (eth-spout)	44s
Deploy image (governance-api)	55s
Deploy image (governance-snapshot)	50s
Deploy image (multisig)	47s
Deploy image (neo-savant)	55s
Deploy image (scilla-server)	50s
Deploy image (zillion)	2m 42s
Build image with Makefile (devex)	3m 49s
Build image with Makefile (zilliqa-isolated-server)	1m 26s
	23m 31s

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