Propagate pandas-dev/pandas#66666 and pandas-dev/pandas#64647 to fix nightly

[cmp0xff]

Failed pipeline: https://github.com/pandas-dev/pandas-stubs/actions/runs/31423727449/job/93570370356

Based on #1787, we need to be sure when the deprecation will happen, before making changes.

pandas-dev/pandas#66666

Changes in docs missing: raising pandas-dev/pandas#66724.

pandas-dev/pandas#64647

Changes in docs missing: raising pandas-dev/pandas#66725.

[cmp0xff]

OK, it turns out that pandas has issues updating docs pandas-dev/pandas#66725 (comment) pandas-dev/pandas#64703 This can affect our pipeline around pandas deprecations. cc @Dr-Irv @loicdiridollou

[loicdiridollou]

Good to know! I think eventually the source code is our source of truth so whatever they merge so main should be our goal. And when we are unsure in which version this will be released, I am fine holding on making the changes, normally they tag the PR for a given milestone like 3.1, 4, ...

[loicdiridollou]

I see the failures in the nightly and indeed I think those should be fixed no matter what the website says since it is the code that matters.