test: unflake StatementTimeoutTest #11091

Job	Run time
dependencies (17)	1m 15s
javadoc	2m 31s
units (11)	3m 36s
units (8)	3m 33s
units-with-multiplexed-session (11)	3m 47s
units (17)	3m 31s
units-with-multiplexed-session (8)	3m 24s
units-with-multiplexed-session (17)	3m 16s
units-with-multiplexed-session (21)	3m 17s
units (21)	3m 13s
windows	7m 32s
clirr	1m 12s
lint	1m 11s
	41m 18s

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