Fix batch tx send encoding · smartcontractkit/chainlink@07994cc

Error return value of `sha.Read` is not checked (errcheck)

Error return value of `rlp.Encode` is not checked (errcheck)

Error return value of `sha.Read` is not checked (errcheck)

Error return value of `h.connector.SendToGateway` is not checked (errcheck)

Error return value of `connector.Start` is not checked (errcheck)

Error return value of `gw.Start` is not checked (errcheck)

Error return value of `client.ListJobs` is not checked (errcheck)

Error return value of `set.Parse` is not checked (errcheck)

Error return value of `fileFs.Parse` is not checked (errcheck)

G601: Implicit memory aliasing in for loop. (gosec)

Provide feedback