pkg/bench/rttanalysis: TestBenchmarkExpectation/DropRole/drop_3_roles failed

[koorosh]

pkg/bench/rttanalysis.TestBenchmarkExpectation/DropRole/drop_3_roles failed on release-23.1 @ 5230230

TestBenchmarkExpectation/DropRole/drop_3_roles
[02:25:07 ](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_BazelEssentialCi/11199965?hideProblemsFromDependencies=false&hideTestsFromDependencies=false&expandBuildChangesSection=true&expandBuildProblemsSection=true&expandBuildTestsSection=true&showLog=11199943_168231_168231&logFilter=debug&logView=flowAware)      Failed
[02:25:07 ](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_BazelEssentialCi/11199965?hideProblemsFromDependencies=false&hideTestsFromDependencies=false&expandBuildChangesSection=true&expandBuildProblemsSection=true&expandBuildTestsSection=true&showLog=11199943_168232_168232&logFilter=debug&logView=flowAware)      === RUN   TestBenchmarkExpectation/DropRole/drop_3_roles
      === CONT  TestBenchmarkExpectation/DropRole/drop_3_roles
          rtt_analysis_bench.go:206: DropRole/drop_3_roles: got 40.5, expected 42
          rtt_analysis_bench.go:212: wrote jaeger trace to /artifacts/tmp/_tmp/1b686e68658fd1761e16df16f8888527/logTestBenchmarkExpectation3986503865/DropRole_drop_3_roles.jaeger.json
              --- FAIL: TestBenchmarkExpectation/DropRole/drop_3_roles (141.60s)

Jira issue: CRDB-30414

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