TestDriver.testConcurrentClose is flaky

[sopel39]

https://github.com/trinodb/trino/actions/runs/8986058614/job/24681403065

Might be related to https://github.com/trinodb/trino/commit/c25ab366bdb08d7a0813c7cff9c521e83633ee48

fyi: @ebyhr

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Error:    Run 267: TestDriver.testConcurrentClose » Timeout testConcurrentClose() timed out after 10 seconds
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