zebra-rpc: Correctly map JSON-RPC to/from 2.0 #2423

Job	Run time
Generate crates matrix	8s
Check crates matrix	5s
Build zebrad crate	6m 28s
Build zebra-utils crate	5m 35s
Build zebra-test crate	1m 33s
Build zebra-state crate	6m 36s
Build zebra-script crate	3m 24s
Build zebra-scan crate	1m 40s
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
	25m 37s

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