DM-45209: Fix E721 linter warning

[timj]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 87.25%. Comparing base (234d922) to head (7e0da86).

Files	Patch %	Lines
tests/test_simple_pipeline_executor.py	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #296   +/-   ##
=======================================
  Coverage   87.25%   87.25%           
=======================================
  Files          50       50           
  Lines        4581     4581           
  Branches      788      788           
=======================================
  Hits         3997     3997           
  Misses        422      422           
  Partials      162      162           

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