Add flag to disable attestation APIs #20370

Job	Run time
check-code	7m 4s
Check for 'skip-ci' label	1s
check-msrv	5m 38s
lockbud	6m 47s
target-branch-check	1s
cargo-sort	21s
basic-simulator-ubuntu	7m 3s
beacon-chain-tests	6m 50s
cargo-udeps	6m 47s
cli-check	7m 7s
compile-with-beta-compiler	6m 46s
debug-tests-ubuntu	6m 51s
ef-tests-ubuntu	6m 51s
execution-engine-integration-ubuntu	6m 50s
fallback-simulator-ubuntu	7m 2s
network-tests	6m 56s
op-pool-tests	6m 58s
release-tests-ubuntu	6m 50s
release-tests-windows	6m 42s
slasher-tests	3m 50s
state-transition-vectors-ubuntu	6m 57s
test-suite-success	1s
	2h 0m 13s

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