Fix flaky zombienet test zombienet-polkadot-elastic-scaling-0002-elastic-scaling-doesnt-break-parachains

[pepoviola]

Some examples from yesterday

https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7814117
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7814051
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813985
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813851
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813786
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813721
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813660
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813595
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813465
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813339
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813207
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813207
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813141
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813075
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7813010
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812947
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812886
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812561
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812433
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812303
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7812038
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811908
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811776
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811710
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811515
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811319
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811205
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811110
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7811064
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7810976
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7810647
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7810059
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809924
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809811
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809778
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809732
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809711
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809577
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809450
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809385
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809255
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809190
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7809125
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808840
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808691
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808569
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808504
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808304
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808239
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7808046
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807909
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807782
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807721
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807659
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807594
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807521
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807456
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807391
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807330
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807267
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807202
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807136
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807070
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/7807003

cc: @paritytech/parachains-core @sandreim