chore: add notification step to trigger UDS Security Hub scan #4483

Job	Run time
lint-check	28s
lint-check	28s
Select Jobs	4s
Select Jobs	4s
Schedule (all, registry1, install) / Test	25m 46s
Schedule (all, registry1, install) / Test	24m 39s
Schedule (all, registry1, upgrade) / Test	27m 18s
Schedule (all, registry1, upgrade) / Test	30m 9s
Schedule (all, unicorn, upgrade) / Test	26m 5s
Schedule (all, unicorn, upgrade) / Test	30m 30s
Schedule (all, unicorn, install) / Test	21m 7s
Schedule (all, unicorn, install) / Test	21m 7s
Schedule (all, upstream, install) / Test	24m 15s
Schedule (all, upstream, install) / Test	24m 15s
Schedule (all, upstream, upgrade) / Test	26m 4s
Schedule (all, upstream, upgrade) / Test	29m 40s
Compliance Evaluation	0s
Compliance Evaluation (registry1) / Evaluate	10s
Compliance Evaluation (upstream) / Evaluate	10s
Compliance Evaluation (unicorn) / Evaluate	10s
	5h 12m 29s

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