CircleCI: Skip "not run" workflows

[jwodder]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 60.80%. Comparing base (c033e19) to head (f0f05cd).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/tinuous/circleci.py	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #205      +/-   ##
==========================================
- Coverage   64.69%   60.80%   -3.89%     
==========================================
  Files          10       10              
  Lines        1385     1388       +3     
  Branches      219      220       +1     
==========================================
- Hits          896      844      -52     
- Misses        407      470      +63     
+ Partials       82       74       -8     

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