[dmitryuk]

Reason for This PR

roadrunner-server/roadrunner#2432

Description of Changes

Set warn log level for broken pipe messages

License Acceptance

By submitting this pull request, I confirm that my contribution is made under
the terms of the MIT license.

PR Checklist

[Author TODO: Meet these criteria.]
[Reviewer TODO: Verify that these criteria are met. Request changes if not]

• All commits in this PR are signed (git commit -s).
• The reason for this PR is clearly provided (issue no. or explanation).
• The description of changes is clear and encompassing.
• Any required documentation changes (code and docs) are included in this PR.
• Any user-facing changes are mentioned in CHANGELOG.md.
• All added/changed functionality is tested.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.50%. Comparing base (e1ddceb) to head (64723ac).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #306      +/-   ##
==========================================
+ Coverage   88.47%   88.50%   +0.02%     
==========================================
  Files          29       29              
  Lines        1345     1348       +3     
==========================================
+ Hits         1190     1193       +3     
  Misses        155      155              

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[rustatian]

Responded in the ticket.