Ignore gossip blob already imported #16240

Job	Run time
debug-tests-ubuntu	7m 38s
beacon-chain-tests	16m 8s
network-tests	17m 22s
op-pool-tests	21m 27s
release-tests-ubuntu	25m 34s
release-tests-windows	13m 44s
slasher-tests	5m 28s
state-transition-vectors-ubuntu	11m 23s
basic-simulator-ubuntu	22m 55s
cargo-udeps	6m 50s
check-code	9m 44s
check-msrv	4m 21s
cli-check	17m 42s
compile-with-beta-compiler	12m 57s
dockerfile-ubuntu	13m 54s
doppelganger-protection-test	21m 49s
ef-tests-ubuntu	16m 42s
execution-engine-integration-ubuntu	9m 13s
fallback-simulator-ubuntu	20m 48s
target-branch-check	1s
test-suite-success	8s
	4h 35m 48s

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