add(test): Add serialized NU5 blocks to test vectors #2268

Job	Run time
Generate crates matrix	17s
Check crates matrix	4s
Build zebrad crate	7m 2s
Build zebra-utils crate	6m 58s
Build zebra-test crate	1m 39s
Build zebra-state crate	6m 45s
Build zebra-script crate	3m 6s
Build zebra-scan crate	3m 18s
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
	29m 17s

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