fix(consensus): Avoid a concurrency bug when verifying transactions in blocks that are already present in the mempool #2273

Job	Run time
Generate crates matrix	15s
Check crates matrix	3s
Build zebrad crate	6m 44s
Build zebra-utils crate	5m 41s
Build zebra-test crate	1m 37s
Build zebra-state crate	5m 46s
Build zebra-script crate	3m 38s
Build zebra-scan crate	1s
Build zebra-rpc crate	1s
Build zebra-node-services crate	1s
Build zebra-network crate	1s
Build zebra-grpc crate	1s
Build zebra-consensus crate	1s
Build zebra-chain crate	1s
Build tower-fallback crate	1s
Build tower-batch-control crate	1s
Open or update issues for building crates individually failures	0s
	23m 53s

Provide feedback