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 79.75%. Comparing base (d44b3d7) to head (c6f2e1c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2839      +/-   ##
==========================================
- Coverage   80.31%   79.75%   -0.56%     
==========================================
  Files         330      330              
  Lines       22505    22505              
  Branches     1514     1514              
==========================================
- Hits        18074    17949     -125     
- Misses       4420     4545     +125     
  Partials       11       11              

Flag	Coverage Δ
cpp	75.50% <ø> (+0.03%)	⬆️
cpp_python	33.72% <ø> (ø)
petab	39.25% <ø> (ø)
python	74.53% <ø> (+0.02%)	⬆️
sbmlsuite-jax	?

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see 8 files with indirect coverage changes

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[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