CI: Azure update from ubuntu-18.04 to ubuntu-latest and ubuntu-20.04 #23669
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PR Summary
In the Azure config, the Ubuntu version is pinned to 18.04. However, the following warning is being raised in the Azure pipelines.
The linked issue actions/runner-images#6002 says that 18.04 will be unsupported on 12/1/22, and the first "brownout" where jobs will fail will happen
August 22, 12:00 UTC - August 22, 16:00 UTC
. IMO it's a poor approach to only have the warning up for 2 weeks before breaking tests, but best to get ahead of it at any rate.This PR updates most of the linux versions to
ubuntu-latest
, and pins the lowest python version toubuntu-20.04
for compatibility. 20.04 is a long-term-support Ubuntu release.Edit: Some of this was covered in #23584 but it looks like Azure was missed.
PR Checklist
Tests and Styling
pytest
passes).flake8-docstrings
and runflake8 --docstring-convention=all
).Documentation
doc/users/next_whats_new/
(follow instructions in README.rst there).doc/api/next_api_changes/
(follow instructions in README.rst there).