Upstream CI build failing due to pyarrow install

[jrbourbeau]

I noticed our upstream build is failing with

Run source continuous_integration/scripts/install.sh
++ [[ -n 1 ]]
++ arr=($(mamba search --override-channels -c arrow-nightlies pyarrow | tail -n 1))
+++ mamba search --override-channels -c arrow-nightlies pyarrow
+++ tail -n 1
++ export PYARROW_VERSION=11.0.0.dev84
++ PYARROW_VERSION=11.0.0.dev84
++ mamba install -y -c arrow-nightlies pyarrow=11.0.0.dev84
conda-forge/linux-64                                        Using cache
conda-forge/noarch                                          Using cache

Looking for: ['pyarrow=11.0.0.dev84']


Pinned packages:
  - python 3.9.*


Encountered problems while solving:
  - package pyarrow-11.0.0.dev84-py310hbc2c91e_0_cuda requires python >=3.10,<3.11.0a0, but none of the providers can be installed

Looking at https://anaconda.org/arrow-nightlies/pyarrow/files, it appears pyarrow nightlies might have recently switched to Python 3.10 only?

cc @jorisvandenbossche @charlesbluca

[jrbourbeau]

Trying Python 3.10 over in #9655