Update Github Actions CI

[joergbrech]

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Fixes #1006

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.81%. Comparing base (42935bb) to head (b0d726f). Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1008      +/-   ##
==========================================
+ Coverage   68.97%   69.81%   +0.84%     
==========================================
  Files         299      299              
  Lines       26499    24166    -2333     
==========================================
- Hits        18277    16871    -1406     
+ Misses       8222     7295     -927     

Flag	Coverage Δ
unittests	69.81% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/common/COptionList.h	100.00% <ø> (+1.58%)	:arrow_up:
...rc/structural_elements/CCPACSFuselageWallSegment.h	33.33% <ø> (ø)

... and 234 files with indirect coverage changes

[joergbrech]

@MarAlder: Because you were interested: With this PR, tigl still uses the boost version distributed in the thirdparty subdir, but:

• The distributed boost version has been updated
• You can change this behavior by setting the CMAKE variable TIGL_USE_INTERNAL_BOOST to false and installing boost some other way, e.g. using conda.

[MarAlder]

Nice! I just like it when a repo works with as few third-party software copies as possible. Having both options is of course a nice solution as well. Building boost in particular is always a bit tricky...