test_nanny_worker_port_range has started deterministically hanging on Windows.
As it hangs on pytest-timeout, it brings down the whole test suite.

Last successful run March 9th, 6AM
First failing run March 9th, 10AM

Third party dependencies were not updated:

< dask                      2022.2.1+17.g2baf7f47          pypi_0    pypi
> dask                      2022.2.1+18.gd88b3442          pypi_0    pypi
< distributed               2022.2.1+9.gde94b408           dev_0    <develop>
> distributed               2022.2.1+10.ge1e43858           dev_0    <develop>

This regression seems to have been caused by #5897; see latest build on the PR (which predates March 9th).