Run A/B tests for py3.11 vs py3.10

[fjetter]

Distributed now / soon supports py3.11. We should run a A/B test to see how the py3.11 perf improvements impact dask.

Blocked by

• Add support for Python 3.11 dask/distributed#7249
• Python 3.11 support  dask/dask#9691

[crusaderky]

There is no measurable difference between 3.10 and 3.11.