Deneb publish and verification optimisations #14283

Job	Run time
target-branch-check	1s
network-tests	26m 50s
beacon-chain-tests	28m 44s
op-pool-tests	30m 11s
release-tests-ubuntu	6m 39s
debug-tests-ubuntu	11m 14s
release-tests-windows	22m 38s
ef-tests-ubuntu	12m 32s
slasher-tests	5m 1s
state-transition-vectors-ubuntu	15m 17s
cargo-udeps	9m 53s
check-code	9m 34s
check-msrv	11m 55s
dockerfile-ubuntu	29m 2s
doppelganger-protection-test	21m 30s
eth1-simulator-ubuntu	45m 8s
execution-engine-integration-ubuntu	30m 47s
merge-transition-ubuntu	49m 43s
no-eth1-simulator-ubuntu	38m 40s
syncing-simulator-ubuntu	32m 53s
compile-with-beta-compiler	30m 19s
	7h 48m 31s

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