[BUG] pytest-lazy-fixture may be dead, blocking pytest upgrades

[Jacob-Stevens-Haas]

See https://github.com/TvoroG/pytest-lazy-fixture/issues/65 as noticed in any CI runs since pytest 8.0 was released a few days ago.

We often want to parametrize a test, where one value the parameter could take is a fixture. That's what pytest-lazy-fixture does.

pytest-lazy-fixture may be abandoned, so :man_shrugging: it might get included in pytest itself, or it might get a new maintainer, or someone may fork it and upload it as a new PyPI package. In the interim, I will limit the version of pytest in this repo.

[Jacob-Stevens-Haas]

Reopening - we want to be able to implement a longer term fix once pytest/lazy-fixture issue solved.