Test lowest-direct dependencies

[NicolaCourtier]

Description

Add a continuous integration test that employs the lowest-direct dependencies, alongside the existing nightly check on the latest dependencies, to inform the lowest supported versions that we state in the pyproject.toml.

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #).

Important checks:

Please confirm the following before marking the PR as ready for review:

• No style issues: $ pre-commit run or $ nox -s pre-commit (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: nox -s tests
• The documentation builds: nox -s doctest
• Code is commented for hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.71%. Comparing base (4628a65) to head (e47c565).
⚠️ Report is 10 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #858      +/-   ##
===========================================
+ Coverage    89.41%   90.71%   +1.30%     
===========================================
  Files           63       67       +4     
  Lines         4857     5215     +358     
===========================================
+ Hits          4343     4731     +388     
+ Misses         514      484      -30     

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[NicolaCourtier]

Hi @agriyakhetarpal, I'm hoping you may have some advice!
The aim of this PR is to periodically check the lowest dependency versions that we say we support in the pyproject.toml. It wouldn't need to be run very often, but it would be nice to keep the lowest versions up-to-date. The command uv pip install --resolution lowest-direct -e .[all,dev] seems to do what I want locally, but simply adding this option to the GitHub action does not work. Would you recommend such a test and if so, how can it be implemented?