Updated PEtab.jl to work with version 3.x

[PaulJonasJost]

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Codecov Report

Attention: Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 82.90%. Comparing base (8c35ccf) to head (74735e8).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
pypesto/objective/julia/petabJl.py	50.00%	4 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1489      +/-   ##
===========================================
- Coverage    82.93%   82.90%   -0.04%     
===========================================
  Files          163      163              
  Lines        13790    13790              
===========================================
- Hits         11437    11432       -5     
- Misses        2353     2358       +5     

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[sebapersson]

Thanks for updating, everything looks good for me!

[PaulJonasJost]

removed the julia specific caching. We faced a lot of problems repeatedly due to that. Installing dependencies went from 9:45 (in gradient check example to 11:15. In my opinion the 2min extra (plus fluctuations obviously) are worth the less hassle (90% sure a lot of julia fails stemmed from the julia caching). What do you guys think @dweindl @Doresic @vwiela @dilpath?