Add conda installation workflow

[FFroehlich]

Summary

• add a cron-based GitHub Actions workflow to verify conda installations on Linux and macOS
• ensure the workflow also runs on pull requests

Testing

• pre-commit run --files .github/workflows/test_conda_install.yml
• pytest tests/benchmark_models/test_petab_benchmark.py -k Boehm_JProteomeRes2014
• pytest tests/benchmark_models/test_petab_benchmark_jax.py -k Boehm_JProteomeRes2014

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https://chatgpt.com/codex/tasks/task_b_685d2741a818832ba131032a356886d8

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.76%. Comparing base (a386ba7) to head (f122de0).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2839      +/-   ##
==========================================
- Coverage   76.48%   75.76%   -0.73%     
==========================================
  Files         307      307              
  Lines       20022    20022              
  Branches     1500     1500              
==========================================
- Hits        15314    15169     -145     
- Misses       4695     4840     +145     
  Partials       13       13              

Flag	Coverage Δ
cpp	71.93% <ø> (-0.06%)	⬇️
cpp_python	38.53% <ø> (ø)
petab	39.20% <ø> (ø)
python	69.51% <ø> (-0.06%)	⬇️
sbmlsuite-jax	?

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see 7 files with indirect coverage changes

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate failed

Failed conditions
1 Security Hotspot

See analysis details on SonarQube Cloud