Update to libpetab 0.4.0

[dweindl]

Adapt to and require petab>=0.4.0 Changing all petab.XXX to petab.v1.XXX. Most of petab.XXX is now deprecated.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.72%. Comparing base (ba84aa6) to head (a6f5557).
Report is 1 commits behind head on develop.

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HEAD has 10 uploads less than BASE

Flag	BASE (ba84aa6)	HEAD (a6f5557)
	12	2

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #1422       +/-   ##
============================================
- Coverage    83.33%   68.72%   -14.62%     
============================================
  Files          161      161               
  Lines        13226    13226               
============================================
- Hits         11022     9089     -1933     
- Misses        2204     4137     +1933     

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[PaulJonasJost]

Thanks :)