CI/GHA: Run Windows tests on windows-2019 instead of windows-2022

[amotl]

Might resolve those errors:

OSError: [WinError 10013] An attempt was made to access a socket in a way forbidden by its access permissions

Spotted at, for example, https://github.com/earthobservations/wetterdienst/runs/6542666944#step:7:611

See also actions/runner-images#4856.

[codecov]

Codecov Report

Merging #654 (4cbf6fc) into main (e2acc55) will decrease coverage by 0.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #654      +/-   ##
==========================================
- Coverage   90.99%   90.73%   -0.26%     
==========================================
  Files          94       94              
  Lines        6274     6274              
  Branches      529      529              
==========================================
- Hits         5709     5693      -16     
- Misses        443      456      +13     
- Partials      122      125       +3     

Flag	Coverage Δ
unittests	90.73% <ø> (-0.26%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
wetterdienst/ui/explorer/library.py	69.23% <0.00%> (-30.77%)	⬇️
wetterdienst/ui/explorer/app.py	81.52% <0.00%> (-6.53%)	⬇️

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[amotl]

The most probable root cause of this issue would be that there is already another program listening on the same port. Maybe a stale instance of the Dash server which is about to be tested here?

References

• https://stackoverflow.com/questions/2778840/socket-error-errno-10013-an-attempt-was-made-to-access-a-socket-in-a-way-forb
• https://intellij-support.jetbrains.com/hc/en-us/community/posts/360007090799-OSError-WinError-10013-An-attempt-was-made-to-access-a-socket-in-a-way-forbidden-by-its-access-permissions
• OSError: [WinError 10013] An attempt was made to access a socket in a way forbidden by its access permissions googleworkspace/python-samples#86
• https://discuss.tryton.org/t/oserror-winerror-10013-an-attempt-was-made-to-access-a-socket-in-a-way-forbidden-by-its-access-permissions/4279
• https://my.guild.ai/t/oserror-winerror-10013-an-attempt-was-made-to-access-a-socket-in-a-way-forbidden-by-its-access-permissions/546

[amotl]

I think the situation improved in the meanwhile, so there will be no need for this patch.