End of Python3.9 support

[fjetter]

It's the time of the year again where NEP29 "allows" us to drop a python version.

Numpy already dropped support numpy/numpy#26242 / numpy/numpy#26222
Pandas is still supporting it. The only issue I could find that relates is pandas-dev/pandas#55528

Are there any objections from the community to drop python 3.9 support?

[jacobtomlinson]

No objection from me!

[jakirkham]

Pandas is still supporting it. The only issue I could find that relates is pandas-dev/pandas#55528

Pandas is also dropping Python 3.9 as of PR: pandas-dev/pandas#58238

It is yet to be included in a release

[jrbourbeau]

Closed via dask/dask#11245, dask/distributed#8793, dask/dask-expr#1109