Flaky spec Jest timeout "calls `fetchEpicsForTimeframe` with extended timeframe array"

Job #543261945 failed for 8f631dd5:

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Summary of all failing tests
FAIL ee/spec/frontend/roadmap/components/roadmap_app_spec.js (10.937s)
  ● RoadmapApp › extending the roadmap timeline › calls `fetchEpicsForTimeframe` with extended timeframe array
    Test took too long (5343.083659ms > 5000ms)!
      52 |     // debugging always takes longer than the test timeout.
      53 |     if (elapsedNS > timeoutNS && !IS_DEBUGGING) {
    > 54 |       throw new Error(
         |             ^
      55 |         `Test took too long (${elapsedNS / NS_PER_MS}ms > ${timeoutNS / NS_PER_MS}ms)!`,
      56 |       );
      57 |     }
      at Object.<anonymous> (spec/frontend/helpers/timeout.js:54:13)
Test Suites: 1 failed, 716 passed, 717 total