538 warnings in reports

[aloukina]

This PR closes #536 and closes #538.

• Refactored test setup to avoid performance warning
• No changes were necessary for Check if there are warnings in the reports and fix them if feasible #538 since warnings came from third package.
• Added a note to developers to flag the duplicate warning tracking (see also Streamline the code for flagging warnings in the reports #539)

[codecov]

Codecov Report

Merging #540 (45a8493) into main (dad6633) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #540   +/-   ##
=======================================
  Coverage   92.81%   92.81%           
=======================================
  Files          29       29           
  Lines        4187     4187           
=======================================
  Hits         3886     3886           
  Misses        301      301           

Impacted Files	Coverage Δ
rsmtool/test_utils.py	68.63% <ø> (ø)

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[desilinguist]

Looks great! Thank you!