bump github.com/hyperledger/fabric-protos-go-apiv2 to v0.3.4 #3716

Job	Run time
Basic Checks	2m 52s
Integration Tests (raft)	12m 10s
Integration Tests (pvtdata)	11m 45s
Unit Tests	24m 59s
Integration Tests (pvtdatapurge e2e)	10m 55s
Integration Tests (ledger)	13m 24s
Integration Tests (lifecycle)	5m 59s
Integration Tests (smartbft)	19m 47s
Integration Tests (discovery gossip devmode pluggable)	7m 5s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	16m 7s
Integration Tests (sbe nwo msp)	8m 0s
	2h 13m 3s

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