Suppress noisy test logs from recent changes

[jack-berg]

The build log output from SpanPipelineOtlpBenchmark got wildly verbose after merging #8167.

This suppresses those logs and some others.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.32%. Comparing base (9b602eb) to head (10f7d7e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8234   +/-   ##
=========================================
  Coverage     90.32%   90.32%           
  Complexity     7653     7653           
=========================================
  Files           843      843           
  Lines         23080    23080           
  Branches       2312     2312           
=========================================
  Hits          20846    20846           
  Misses         1516     1516           
  Partials        718      718           

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