Restore nightly CI build due to new pandas version (3.0.0)

[loicdiridollou]

• Closes Restore nightly CI build due to new pandas version (3.0.0) #973
• Tests added: Please use assert_type() to assert the type of any return value

We can probably be a little more elegant in some of the pytest_warn_bounds where we define a variable then redefine it the line below if we are dealing with pandas 3.0.0, open to suggestions.

[Dr-Irv]

We can probably be a little more elegant in some of the pytest_warn_bounds where we define a variable then redefine it the line below if we are dealing with pandas 3.0.0, open to suggestions.

I'm open to better ways of doing the tests here, but will accept this PR as is.

[Dr-Irv]

thanks @loicdiridollou

[Dr-Irv]

@loicdiridollou looks like the fix for test_versions() didn't work. See https://github.com/pandas-dev/pandas-stubs/actions/runs/10289869197/job/28478532479

[loicdiridollou]

Arghh I thought I had it fixed, sorry for that let me investigate and fix.

[loicdiridollou]

I was able to have a running build on my own repo, see https://github.com/loicdiridollou/pandas-stubs/actions/runs/10290769879/job/28481506269.
The PR is here (#975), the issue was that pandas>=3.0.0 does not seem to rely on distutils anymore so the warning was never raised to the user