Check slashability of attestations in batches to avoid sequential bottleneck #24944

Job	Run time
check-msrv	5m 2s
check-code	8m 12s
target-branch-check	4s
Check for 'skip-ci' label	4s
lockbud	42s
slasher-tests	3m 1s
beacon-chain-tests	7m 35s
op-pool-tests	8m 8s
network-tests	7m 48s
ef-tests-ubuntu	7m 16s
state-transition-vectors-ubuntu	3m 54s
debug-tests-ubuntu	5m 26s
http-api-tests	7m 9s
release-tests-ubuntu	7m 23s
basic-simulator-ubuntu	7m 53s
compile-with-beta-compiler	7m 44s
fallback-simulator-ubuntu	8m 7s
cli-check	8m 9s
cargo-udeps	7m 26s
execution-engine-integration-ubuntu	7m 7s
cargo-sort	23s
test-suite-success	1s
	1h 58m 34s

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