TST: ignore deprecation warning from pandas (Pyarrow will become a required dependency)

[neutrinoceros]

PR Summary

As noted by @jzuhone in #4782, this warning makes half of CI red.

I don't think we care about it, but for completion, here it is in full:

DeprecationWarning: 
Pyarrow will become a required dependency of pandas in the next major release of pandas (pandas 3.0),
(to allow more performant data types, such as the Arrow string type, and better interoperability with other libraries)
but was not found to be installed on your system.
If this would cause problems for you,
please provide us feedback at https://github.com/pandas-dev/pandas/issues/54466

[neutrinoceros]

CI is still half red... but for a different reason.
Specifically, there was a change in pandas 2.2 that broke Firefly. For now, I've just noted it within the culprit PR. This isn't a yt problem, but we might consider pinning pandas in our tests if this isn't remedied promptly.

[neutrinoceros]

I opened two PRs upstream to fix some compatibility issues between Firefly and the rest of the world.
ageller/Firefly#177
agurvich/abg_python#4

If both patches are accepted and released shortly, no further action should be required here
ping @agurvich

[agurvich]

Never say I don't respond to pings! Updated both on pypi, hopefully that helps y'all's CI. Cheers @neutrinoceros !

[neutrinoceros]

Awesome, thank you so much !

[neutrinoceros]

There's another unrelated failure left with yt/visualization/volume_rendering/tests/test_scene.py::test_annotations. I don't understand where it's coming from and I don't have time left to dig into it. Will report.
edit: this is #4785

@yt-fido test this please