Failing to install matplotlib on gh actions

[j-fu]

Hi, it seems that there are some probelems with gh action for python - matplotlib cannot be installed, see e.g. https://github.com/j-fu/ExtendableGrids.jl/actions/runs/3585658965/jobs/6033920612#step:6:183

My be this is correlated with the fact that CI is red for the most recent commit ?

[j-fu]

... problem disappeared after restart in the morning. Somethin feels a little bit brittle...

[schlichtanders]

I am running into something similar.

ResolvePackageNotFound: 
  - conda==23.1.0

Occurs inside github actions with my custom docker, however when replicating steps locally everything works. I am using AMD architecture locally and this should also be the architecture for github.

@j-fu have you got more insights into what was the cause of this failure?

[Krastanov]

This comment might be for a related issue: #251 (comment)