Fix flakyness with mutator execution times

[shreyas-goenka]

Changes

Why

Tests

[eng-dev-ecosystem-bot]

Run: 17769983597

	Env	✅​pass	🙈​skip
✅​	aws linux	311	527
✅​	aws windows	312	526
✅​	aws-ucws linux	423	425
✅​	aws-ucws windows	424	424
✅​	azure linux	311	526
✅​	azure windows	312	525
✅​	azure-ucws linux	423	424
✅​	azure-ucws windows	424	423
✅​	gcp linux	310	528
✅​	gcp windows	311	527

[github-actions[bot]]

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