Also test if python files were changed (backport #1264)

[mergify]

I realized that the CI jobs are not running in #1259

Not that we would have any tests for rqt_jtc, but just in case we get some.

---

This is an automatic backport of pull request #1264 done by Mergify.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.25%. Comparing base (3557ed0) to head (9bde253).
Report is 4 commits behind head on humble.

Additional details and impacted files

@@             Coverage Diff             @@
##           humble    #1267       +/-   ##
===========================================
- Coverage   87.33%   65.25%   -22.09%     
===========================================
  Files          92      103       +11     
  Lines        8495    11431     +2936     
  Branches      709     7248     +6539     
===========================================
+ Hits         7419     7459       +40     
- Misses        811     1473      +662     
- Partials      265     2499     +2234     

Flag	Coverage Δ
unittests	65.25% <ø> (-22.09%)	⬇️

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see 88 files with indirect coverage changes