docs: added note about test timeout #33242

Job	Run time
setup	1m 54s
integration-tests-packages	12m 51s
Shard (0) HTTP Integration Tests	11m 30s
Shard (0) Unit Tests	8m 42s
Shard (1) HTTP Integration Tests	8m 48s
Shard (0) Module Integration Tests	10m 38s
Shard (1) Unit Tests	5m 24s
Shard (1) Module Integration Tests	9m 25s
unit-tests	1s
integration-tests-modules	1s
integration-tests-http	1s
	1h 9m 15s

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