Electra alpha8 spec updates #19028

Job	Run time
check-msrv	5m 17s
check-code	9m 36s
lockbud	13m 35s
Check for 'skip-ci' label	1s
target-branch-check	1s
cli-check	7m 42s
beacon-chain-tests	30m 53s
basic-simulator-ubuntu	14m 6s
cargo-udeps	7m 7s
compile-with-beta-compiler	13m 27s
debug-tests-ubuntu	8m 16s
ef-tests-ubuntu	6m 42s
execution-engine-integration-ubuntu	10m 3s
fallback-simulator-ubuntu	10m 54s
network-tests	18m 28s
op-pool-tests	15m 37s
release-tests-ubuntu	29m 52s
release-tests-windows	26m 14s
slasher-tests	1m 42s
state-transition-vectors-ubuntu	2m 17s
test-suite-success	4s
	3h 51m 54s

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