Activate coverage-build for humble

[christophfroehlich]

No coverage build was active for humble.

[destogl]

We can add this, but have to watch out to go over limits on the coverage server (if this is even possible).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (humble@a431948). Click here to learn what that means.

❗ Current head 9db61b6 differs from pull request most recent head 1200199. Consider uploading reports for the commit 1200199 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             humble    #1323   +/-   ##
=========================================
  Coverage          ?   31.31%           
=========================================
  Files             ?       95           
  Lines             ?    10698           
  Branches          ?     7380           
=========================================
  Hits              ?     3350           
  Misses            ?      705           
  Partials          ?     6643           

Flag	Coverage Δ
unittests	31.31% <0.00%> (?)

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