Fix binder configuration

[dweindl]

• Rename default user instead of attempting to create a new user with pre-existing ID. Fixes Binder configuration broken #3138
• skip installing libatlas which is not necessary anymore.
• install jax extras
• use venv instead of the system env (no longer supported)
• install correct sympy / pysb versions

👀 https://mybinder.org/v2/gh/dweindl/AMICI/25328720e5e0eae1473097c4b917842a2451b5b9?labpath=doc/examples/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.71%. Comparing base (1fcaa3a) to head (2532872).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3139      +/-   ##
==========================================
- Coverage   77.35%   76.71%   -0.64%     
==========================================
  Files         318      318              
  Lines       20631    20631              
  Branches     1483     1483              
==========================================
- Hits        15959    15827     -132     
- Misses       4664     4796     +132     
  Partials        8        8              

Flag	Coverage Δ
cpp	70.44% <ø> (ø)
cpp_python	37.80% <ø> (ø)
petab	47.16% <ø> (ø)
python	68.90% <ø> (ø)
sbmlsuite-jax	?

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see 4 files with indirect coverage changes

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