CI: Adjust scipy integration tolerances

[dweindl]

Fixes #3116.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.58%. Comparing base (2d0dd5b) to head (5d9c759).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3118      +/-   ##
==========================================
- Coverage   78.24%   77.58%   -0.67%     
==========================================
  Files         315      315              
  Lines       20482    20482              
  Branches     1484     1484              
==========================================
- Hits        16027    15891     -136     
- Misses       4447     4583     +136     
  Partials        8        8              

Flag	Coverage Δ
cpp	71.71% <ø> (ø)
cpp_python	37.85% <ø> (ø)
petab	46.56% <ø> (ø)
petab_sciml	13.93% <ø> (ø)
python	70.36% <ø> (ø)
sbmlsuite-jax	?

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see 4 files with indirect coverage changes

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