Fix duties override bug in VC #15485

Job	Run time
beacon-chain-tests	19m 5s
network-tests	17m 47s
op-pool-tests	20m 23s
debug-tests-ubuntu	15m 30s
release-tests-ubuntu	21m 43s
release-tests-windows	36m 6s
slasher-tests	5m 36s
target-branch-check	1s
check-code	9m 54s
check-msrv	4m 28s
dockerfile-ubuntu	13m 8s
doppelganger-protection-test	23m 36s
ef-tests-ubuntu	17m 39s
eth1-simulator-ubuntu	30m 3s
execution-engine-integration-ubuntu	16m 22s
merge-transition-ubuntu	29m 56s
no-eth1-simulator-ubuntu	28m 5s
state-transition-vectors-ubuntu	11m 44s
syncing-simulator-ubuntu	22m 30s
cargo-udeps	7m 16s
cli-check	17m 42s
compile-with-beta-compiler	13m 29s
test-suite-success	4s
	6h 22m 7s

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